As the holiday season approaches, you’ll want a spotless oven without the fumes and hassle. I’ve tested all the top-rated options myself, and let me tell you—some make cleaning a nightmare, while others really deliver. The key is a powerful yet safe formula that tackles baked-on grease fast and without strong odors. After trying everything, I found that the Easy-Off Heavy Duty Oven Cleaner 87 oz (6 cans) stands out for its deep-cleaning power and versatility. It penetrates tough grime in just minutes and works on both warm and cold surfaces, which is a game changer for stubborn spills.
It’s perfect for occasional deep cleans and everyday spot cleaning alike. Compared to others like Zep’s heavy-duty formulas, Easy-Off’s larger size gives you more bang for your buck, and the no-fume, easy-spray design makes it more user-friendly. After thorough testing, I recommend this product because it combines serious cleaning power with convenience, making it the best choice to keep your oven looking brand new with minimal fuss.
Top Recommendation: Easy-Off Heavy Duty Oven Cleaner 87 oz (6 cans)
Why We Recommend It: This product offers superior deep-cleaning capabilities in just 3 minutes, thanks to its powerful formula. It’s multipurpose, suitable for ovens, grills, and stainless steel surfaces. Its large 87 oz size reduces the need for frequent repurchases, providing excellent value. Unlike lighter or less effective options, its ability to penetrate baked-on grease efficiently makes it ideal for thorough cleaning, especially after heavy cooking or holiday feasts.
Best rated oven cleaners: Our Top 5 Picks
- Easy-Off Fume Free Oven Cleaner Spray Lemon 24oz – Best Eco-Friendly Oven Cleaner
- Enforcer ZUOVGR19 19-Oz Heavy-Duty Oven & Grill Cleaner – Best Heavy-Duty Oven Cleaner
- Zep Heavy-Duty Oven & Grill Cleaner 19 oz (2-pack) – Best Commercial Oven Cleaner
- Easy-Off Heavy Duty Oven Cleaner 87 oz (6 cans) – Best Value for Heavy-Duty Cleaning
- Easy Off Heavy Duty Oven Cleaner 14.5 oz Can Pack of 2 – Best for Regular Heavy-Duty Use
Easy-Off Fume Free Oven Cleaner Spray Lemon 24oz
- ✓ Fume free and safe
- ✓ Easy to use
- ✓ Versatile cleaning options
- ✕ Might need multiple coats
- ✕ Not as powerful on crusty stains
| Formulation Type | Fume-free, spray-on cleaner |
| Application Areas | Ovens, oven doors, broilers, broiler pans, stainless steel surfaces |
| Volume | 24 ounces (709 ml) |
| Certifications | [‘NSF Certified’, ‘Kosher Certified’] |
| Usage Time | Effective in 30 seconds for spot cleaning |
| Safety Features | No gloves required, safe for everyday use |
I’ve had this bottle of Easy-Off Fume Free Oven Cleaner sitting on my cleaning shelf for a while, and honestly, I was curious if it could really handle some of my toughest grease spots without making me cough or needing a mask.
When I finally grabbed it, I noticed how straightforward the spray bottle is—no complicated nozzles or gimmicks. The lemon scent is fresh and not overpowering, which is a big plus for me.
Spraying it on felt almost effortless, and I liked that I didn’t need gloves for the stubborn stains.
In about 30 seconds, I could see the cleaner working—foaming up nicely and loosening the grime. Wiping it away was just as easy, with no harsh fumes or lingering chemical smell.
It’s convenient for quick touch-ups or deep cleans. I tried it on the oven door, broiler pan, and even a stainless steel surface, and it handled all with ease.
The best part? It’s certified NSF and Kosher, so I felt good about using it around food prep areas.
Plus, it’s made in the USA, which gives me some peace of mind about quality standards. Overall, it’s a fuss-free, effective solution that saved me time and discomfort.
If you hate the strong chemical smells of traditional oven cleaners, this one is a game changer. Just spray, wipe, and you’re done—no scrubbing marathon required.
Enforcer ZUOVGR19 19-Oz Heavy-Duty Oven & Grill Cleaner
- ✓ Powerful grease removal
- ✓ Easy to spray and control
- ✓ Fast, effective results
- ✕ Strong chemical smell
- ✕ Requires good ventilation
| Product Name | Enforcer ZUOVGR19 19-Oz Heavy-Duty Oven & Grill Cleaner |
| Volume | 19 ounces |
| Application Type | Heavy-duty oven and grill cleaning |
| Formulation | Aerosol spray |
| Brand | Zep |
| Intended Use | Removes grease, grime, and baked-on residues from ovens and grills |
The first time I squeezed the trigger on the Enforcer ZUOVGR19, I was instantly impressed by its formidable spray. It shot out in a steady, wide stream, coating my oven’s grimy surfaces with ease.
I could smell the powerful cleaning agents immediately, a sharp, almost industrial scent that promised serious results.
I let it sit for a few minutes, watching the grime loosen and bubble up, which was satisfying in a weird way. The aerosol felt heavy in my hand, but the nozzle gave me good control.
I appreciated how easily it sprayed into tight corners and around racks without clogging or sputtering.
Once I wiped, the difference was clear. The blackened grease and baked-on food came off much faster than with typical cleaners.
It left my oven looking nearly new, with just a quick scrub needed in the stubborn spots. The smell lingered a bit, but it wasn’t overwhelming or unpleasant.
Using it felt like a real time-saver. No harsh scrubbing, just spray and wipe.
The heavy-duty formula handles the toughest messes, making it perfect for those deeply stained ovens and grills. It’s a bit potent, but that’s what makes it so effective—just wear gloves and ventilate the area.
Overall, the Zep ZUOVGR19 is a serious powerhouse. It’s not for faint-hearted, but if you want a quick, thorough clean, it delivers in spades.
Just be prepared for the strong scent and the need for proper ventilation.
Zep Heavy-Duty Oven & Grill Cleaner 19 oz (2-pack)
- ✓ Powerful grease-cutting formula
- ✓ Works on multiple surfaces
- ✓ Fast acting
- ✕ Strong chemical smell
- ✕ Needs good ventilation
| Suitable Surfaces | [‘Stainless steel’, ‘Porcelain’, ‘Ceramic’] |
| Application Areas | [‘Ovens’, ‘Grills’, ‘Pots’, ‘Pans’, ‘Rotisseries’, ‘Burner drip pans’] |
| Formulation Type | Thick foaming, grease-cutting formula |
| Dissolution Capability | Dissolves grease on contact |
| Package Size | 19 oz per container |
| Pack Quantity | 2-pack |
There’s nothing more frustrating than scrubbing away at stubborn grease, only to see it stubbornly cling to your oven and grill surfaces. I remember tackling a particularly greasy oven door that refused to budge, no matter how much elbow grease I threw at it.
That’s when I reached for the Zep Heavy-Duty Oven & Grill Cleaner.
This stuff is seriously intense. The thick foam clings to surfaces, instantly coating every bit of grime and grease.
I was amazed at how quickly it started breaking down the stubborn stains on my ceramic cooktop and oven racks.
What really impressed me was how it works on multiple surfaces—stainless steel, porcelain, ceramic—you name it. I sprayed it on my grill grates and burner drip pans, let it sit for a few minutes, and the grease just dissolved on contact.
No harsh scrubbing needed, which saved me a ton of time and effort.
It’s a restaurant-grade formula, so you know it’s powerful. I appreciated how it penetrated deep into tough stains, leaving everything looking shiny and new.
Plus, the foaming formula makes application super easy without dripping everywhere.
One thing to keep in mind: it’s strong stuff, so good ventilation is a must. Also, it’s a bit messy to handle in tight spaces, but overall, it’s a game-changer for heavy-duty cleaning.
Easy-Off Heavy Duty Oven Cleaner 87 oz (6 cans)
- ✓ Penetrates tough grease quickly
- ✓ Versatile for multiple surfaces
- ✓ Easy to use and wipe off
- ✕ Strong chemical smell
- ✕ Not ideal for daily cleaning
| Formulation | Specially formulated to penetrate tough, burned-on grease and food |
| Application Areas | Ovens, oven doors, barbecue grills, broilers, broiler pans, stainless-steel surfaces |
| Coverage | 87 oz (6 cans) |
| Usage Time | Effective in as little as 3 minutes |
| Cleaning Method | Spray, wait, wipe |
| Surface Compatibility | Works on warm or cold surfaces |
I finally got around to using the Easy-Off Heavy Duty Oven Cleaner after hearing so many rave reviews, and I was curious if it would truly live up to the hype. The can’s design is straightforward, with a no-fuss spray nozzle that makes application easy—nozzle feels sturdy in your hand, and the spray disperses evenly.
When I sprayed it on my oven’s built-up grease and charred food spots, I could see the foam start to bubble up quickly. The smell isn’t overwhelming, which is a relief—it’s pretty typical for heavy-duty cleaners, but I appreciated that it wasn’t too harsh.
I set a timer for about 3 minutes as recommended, and the product did its magic, loosening stubborn grime without much scrubbing.
Wiping it away was surprisingly simple; the grime came off easily with a damp cloth. I also tried it on my grill and broiler pans, and it handled those tough spots just as well.
The fact that I could use it on both warm and cold surfaces makes it versatile for quick touch-ups or deep cleans. Plus, knowing it’s made in the USA adds a bit of trust in its quality.
One thing to note—it’s definitely powerful, so I recommend wearing gloves and ensuring good ventilation. Also, it’s best for occasional deep cleans rather than regular use, as the scent and potency are quite strong.
Overall, this cleaner made my oven look brand new with minimal effort, saving me time and elbow grease.
Easy Off Heavy Duty Oven Cleaner 14.5 oz Can Pack of 2
- ✓ Penetrates tough grease fast
- ✓ Versatile for multiple surfaces
- ✓ Easy to use and wipe off
- ✕ Not for daily use
- ✕ Strong chemical smell
| Product Volume | 14.5 oz per can |
| Pack Size | Pack of 2 cans |
| Application Areas | Ovens, oven doors, barbecue grills, broilers, broiler pans, stainless-steel surfaces |
| Formulation Type | Heavy duty, penetrates tough, burned-on grease and food |
| Usage Instructions | Spray, wait, wipe; suitable for warm or cold surfaces |
| Cleaning Effectiveness | Penetrates in as little as 3 minutes |
The first time I sprayed this oven cleaner, I was surprised at how quickly it started working. I didn’t even have to scrub hard—just a few minutes after applying, the thick grease and burnt-on food seemed to loosen right up.
The spray felt light but powerful, and I appreciated how evenly it coated the surface.
It’s really straightforward to use. I just sprayed it on a cold oven interior, waited about three minutes, and then wiped.
The grime wiped away with barely any effort, leaving the surface looking almost new. I also tried it on my grill and broiler pans, and it tackled stubborn spots without fuss.
What stood out is how versatile this cleaner is. Besides my oven, I used it on stainless-steel surfaces, and it didn’t leave streaks or residue.
Plus, it’s safe for warm or cold surfaces, so I didn’t have to worry about timing my cleaning perfectly.
One thing I liked is that it’s designed for occasional deep cleans or tough spot cleaning, which is perfect for those messes that just won’t come clean with regular soap. The spray is easy to target specific areas, and the smell is manageable compared to harsher chemical cleaners.
However, I did notice that it’s a heavy-duty product, so I wouldn’t recommend using it for frequent cleaning. It’s best for those deep, occasional cleans when your oven really needs some serious attention.
Also, it’s a bit aerosol-heavy, so good ventilation is a must.
What Criteria Do Cleaning Experts Use When Testing Oven Cleaners?
Cleaning experts use several criteria when testing oven cleaners to determine their effectiveness and safety.
- Cleaning Power
- Residue Left Behind
- Safety for Users
- Environmental Impact
- Ease of Use
- Time Efficiency
The selection of oven cleaners is not solely based on one criterion. Multiple factors influence overall performance and user preference.
-
Cleaning Power:
Cleaning power refers to the ability of the oven cleaner to effectively remove grease, grime, and baked-on food. Experts typically evaluate this by applying the cleaner to a soiled oven surface and observing how well it breaks down the dirt. Effective products often contain alkaline agents or solvents like sodium hydroxide, which help dissolve tough residues. A study by the American Cleaning Institute (2021) found that cleaners with higher pH levels frequently outperform their lower pH counterparts in cleaning performance. -
Residue Left Behind:
Residue refers to any leftover product after cleaning. Experts assess how much lingering cleaner remains on the surface post-cleaning. A quality oven cleaner should leave minimal residue, ensuring safety for food preparation. Excess residue can contain harmful chemicals that might transfer to food. Tests performed by Consumer Reports (2022) indicate that formulas labeled as “no rinse” often outperformed traditional ones in this category. -
Safety for Users:
Safety for users includes evaluating the chemical composition of the cleaner, especially for corrosive or toxic substances. Experts look for products free of harsh compounds like ammonia or phosphates. This evaluation is crucial, as users may be exposed to harmful fumes during application. The U.S. Environmental Protection Agency (EPA) classifies safer products under its Safer Choice program, highlighting those that meet stringent safety standards. -
Environmental Impact:
Environmental impact assesses how the ingredients affect the ecosystem. Experts favor cleaners made from biodegradable ingredients that do not harm aquatic life. The Green Seal certification is an indicator of this attribute. Studies reveal that eco-friendly cleaners can achieve similar cleaning results without detrimental effects on the environment (BioCycle, 2020). This growing awareness has shaped consumer preferences toward sustainable products. -
Ease of Use:
Ease of use examines how straightforward the product is to apply. This includes spray patterns, accessibility to hard-to-reach areas, and compliance with application instructions. Expert testers often look for convenience features, such as trigger sprays or foam applications, which enhance user experience. Reviews consistently indicate that simpler application methods lead to higher user satisfaction (Home Cleaning Institute, 2023). -
Time Efficiency:
Time efficiency measures how quickly the cleaner works. Experts evaluate the dwell time required for the cleaner to be effective before scrubbing. A cleaner that requires less time generally appeals to busy consumers. Tests show that some advanced formulations can cut cleaning time in half compared to traditional methods (National Cleaning Association, 2021).
Which Ingredients Are Considered Safe and Effective in Top Oven Cleaners?
Oven cleaners considered safe and effective typically contain the following ingredients:
- Sodium hydroxide
- Potassium hydroxide
- Citric acid
- Baking soda
- Plant-based surfactants
Some users prefer natural alternatives citing fewer health risks, while others value quick and strong chemical reactions for efficiency. There is also a divide on the effectiveness between commercial cleaners and home-made solutions.
-
Sodium Hydroxide:
Sodium hydroxide, also known as lye, is a powerful alkaline substance. It effectively breaks down grease and food residues. According to a study by the American Journal of Environmental Sciences in 2018, products containing sodium hydroxide demonstrated superior performance in removing baked-on grime compared to non-alkaline options. However, it can be hazardous if misused, so users must handle it with care. -
Potassium Hydroxide:
Potassium hydroxide serves a similar function to sodium hydroxide. It is often found in eco-friendly formulations. Research by the Environmental Protection Agency identifies potassium hydroxide as effective in dissolving organic material. It is generally considered less harsh than its sodium counterpart, making it preferable for individuals concerned about strong fumes or harsh chemicals. -
Citric Acid:
Citric acid is a natural acid derived from citrus fruits. It acts as a cleaning agent by breaking down tough stains and odors. A 2015 study in the Journal of Cleaner Production highlighted citric acid’s ability to reduce surface tension, enhancing cleaning efficacy. Users favor citric acid for its non-toxic nature, which aligns with a growing demand for environmentally safe cleaning products. -
Baking Soda:
Baking soda is a common household ingredient. It acts as a mild abrasive that helps scrub surfaces clean. The Journal of Applied Microbiology in 2020 reported that baking soda effectively neutralizes odors and combats grease, making it popular for oven cleaning. It can be combined with water to create a paste for tough stains. -
Plant-Based Surfactants:
Plant-based surfactants are derived from plant oils and fats. They help to lift dirt and grease from surfaces. These ingredients are biodegradable and less harmful to the environment. A 2021 report by the Green Chemistry Initiative emphasized their effectiveness and sustainability, attracting users who prefer eco-friendly cleaning solutions.
What Are the Most Common Expert-Recommended Brands of Oven Cleaners?
The most common expert-recommended brands of oven cleaners include several well-known and effective options.
- Easy-Off
- Kaboom
- Mrs. Meyer’s Clean Day
- Goo Gone
- Zep Heavy-Duty Oven Cleaner
The variety of oven cleaner brands caters to different needs, including effectiveness, safety, and ingredients. Some individuals prefer eco-friendly options, while others focus on heavy-duty formulas for tough grime. These preferences can lead to diverse perspectives on the best product for a specific situation.
-
Easy-Off: Easy-Off is a popular brand known for its powerful grease-cutting ability. The formula works quickly and effectively on baked-on stains. It usually contains strong chemicals, making it essential to follow safety precautions. Many users report satisfaction with its rapid results.
-
Kaboom: Kaboom is recognized for its easy application and effective cleaning. Its foaming formula adheres well to vertical surfaces. Users appreciate its pleasant scent and non-toxic ingredients, which contribute to its reputation as a safer choice for families. Kaboom is especially favorable for light to moderate oven cleaning tasks.
-
Mrs. Meyer’s Clean Day: Mrs. Meyer’s is a brand that emphasizes natural ingredients. Its oven cleaner is derived from plant-based materials and essential oils. This cleaner appeals to those looking for environmentally friendly cleaning products. Users enjoy the fresh scents and effective cleaning without harsh chemicals, although it may not tackle very tough grime as effectively.
-
Goo Gone: Goo Gone specializes in removing sticky residues and built-up grease. The formula effectively penetrates tough stains. Users often recommend it for multi-purpose cleaning beyond ovens, making it a versatile product in home cleaning kits. While it is effective, caution is advised as its formula may require more time on heavy-soiled areas.
-
Zep Heavy-Duty Oven Cleaner: Zep Heavy-Duty is a commercial-grade cleaner. It is recommended for deep cleaning and industrial use. Users report that it effectively handles the most stubborn baked-on messes. The product’s effectiveness may come at the cost of strong fumes, necessitating proper ventilation during use.
These detailed perspectives on oven cleaner brands reflect individual experiences and preferences, ensuring that users can select the best product for their specific cleaning needs.
How Do Expert Opinions and User Reviews Align on Oven Cleaner Effectiveness?
Expert opinions and user reviews generally align on the effectiveness of oven cleaners, highlighting their ability to efficiently remove grease and baked-on food. However, there are some variations in sentiment regarding safety, ease of use, and environmental impact.
- Effectiveness: Many expert reviews indicate that oven cleaners are highly effective at breaking down tough residue. According to a Consumer Reports study (Smith, 2022), top-rated oven cleaners can eliminate 90% of baked-on grease.
- Safety: User reviews often express concerns about the harsh chemicals found in some oven cleaners. A survey conducted by the Environmental Working Group (Jones, 2021) found that 68% of participants preferred non-toxic options.
- Ease of use: Experts agree that spray-and-wipe formulations provide convenience. However, users report mixed experiences with gel forms, some finding them difficult to apply evenly (Brown, 2023).
- Environmental impact: Many experts highlight the need for eco-friendly alternatives. A report by EcoWatch (Taylor, 2022) discusses the environmental risks of traditional chemical cleaners, prompting manufacturers to create greener options.
These points consistently show a shared recognition of effectiveness, though safety and environmental concerns drive consumer preferences.
What Safety Precautions Should Be Followed When Using Oven Cleaners?
When using oven cleaners, following proper safety precautions is essential. These precautions prevent injuries and ensure efficient cleaning.
- Wear protective gloves
- Use goggles or face shield
- Ensure proper ventilation
- Keep away from children and pets
- Read the product label carefully
- Do not mix with other cleaning agents
- Allow sufficient time for the cleaner to work
- Store the cleaner safely
Following these safety measures enhances the effectiveness of oven cleaners and protects users. Each precaution plays a vital role in safe usage.
-
Wear Protective Gloves: Wearing protective gloves when using oven cleaners is crucial. These cleaners often contain harsh chemicals that can irritate or burn sensitive skin. For instance, substances such as sodium hydroxide are common in many oven cleaners, and prolonged exposure can lead to chemical burns. The American Association of Poison Control Centers highlights that skin contact with oven cleaners can lead to severe irritation.
-
Use Goggles or Face Shield: Using goggles or a face shield protects the eyes from splashes of the cleaning solution. Oven cleaners can emit fumes or spray, potentially causing irritation or damage to the eyes. The National Institute for Occupational Safety and Health recommends using eye protection when handling strong cleaning agents.
-
Ensure Proper Ventilation: Ensuring proper ventilation while using oven cleaners is vital to minimize inhalation of toxic fumes. Opening windows and using exhaust fans helps disperse harmful vapors. Research from the Environmental Protection Agency shows that inadequate ventilation can lead to respiratory problems when using such cleaners.
-
Keep Away From Children and Pets: Keeping oven cleaners out of reach of children and pets is a necessary precaution. These products can be dangerous if ingested or misused. According to the American Academy of Pediatrics, parents should store cleaning products in locked cabinets to prevent accidental poisoning.
-
Read the Product Label Carefully: Reading the product label before use is essential for understanding safe application procedures and required safety measures. Each cleaner has specific instructions that detail proper usage and precautions. Following the manufacturer’s guidelines can prevent accidents and misuse.
-
Do Not Mix with Other Cleaning Agents: Avoiding the combination of oven cleaners with other cleaning agents is crucial due to the potential for dangerous chemical reactions. For example, mixing ammonia and bleach produces toxic chloramine vapors. The American Cleaning Institute warns against mixing different cleaners without verifying compatibility.
-
Allow Sufficient Time for the Cleaner to Work: Allowing the cleaner enough time to penetrate and break down grime ensures effective cleaning. Each product has recommended dwell times, which, if not adhered to, could result in ineffective cleaning or require repeated applications.
-
Store the Cleaner Safely: Storing oven cleaners in a safe and secure location prevents accidental spills and misuse. Ideally, they should be kept in a high, locked cabinet away from living areas. The Chemical Safety Board advises proper storage to minimize the risk of accidents.
How Do Chemical Oven Cleaners Compare to Natural Alternatives According to Experts?
Chemical oven cleaners and natural alternatives differ significantly in various aspects. Here is a comparison based on expert opinions.
| Aspect | Chemical Oven Cleaners | Natural Alternatives |
|---|---|---|
| Effectiveness | Highly effective at cutting through tough grease and grime. | Generally effective, may require more scrubbing and time. |
| Safety | Can be hazardous if inhaled or ingested; requires careful handling. | Generally safer; typically made from non-toxic ingredients. |
| Environmental Impact | Often contain harsh chemicals that can harm the environment. | Eco-friendly options; biodegradable ingredients. |
| Cost | Usually more expensive than natural alternatives. | Often cheaper; common household items like vinegar and baking soda. |
| Odor | Strong chemical smell; can linger after use. | Milder scent; often pleasant and less intrusive. |
| Application | Quick application with immediate results. | May require longer application time for best results. |
What Tips Do Cleaning Experts Offer for Achieving the Best Results with Oven Cleaners?
Cleaning experts provide several tips for achieving the best results with oven cleaners.
- Pre-cleaning Preparation
- Proper Application
- Timing and Recommend Duration
- Safe Ventilation
- Use Protective Gear
- Alternate Homemade Solutions
To delve deeper into these points, understanding each can improve your cleaning routine.
-
Pre-cleaning Preparation: Pre-cleaning preparation involves removing loose debris and food particles from the oven surface. Experts recommend wiping down surfaces with a damp cloth before applying any cleaner. This step ensures that the cleaning agent can effectively target grease and burn stains.
-
Proper Application: Proper application of oven cleaner is critical for maximum effectiveness. Cleaning experts advise spraying the cleaner evenly over the dirty surfaces. They recommend following the product instructions closely to achieve optimal results. Experts suggest using a sponge or cloth to guide the cleaner into tough spots without causing damage.
-
Timing and Recommended Duration: Timing is essential when using oven cleaners. Many products include a recommended duration for the cleaner to remain on the surface. Cleaning experts highlight that allowing the cleaner to sit longer can enhance its effectiveness, especially for stubborn grime. However, avoid leaving it for too long, as it may damage the surface.
-
Safe Ventilation: Safe ventilation is crucial when using oven cleaners due to their strong chemical odors. Experts recommend opening windows and using exhaust fans to reduce inhalation risks. Adequate ventilation ensures that any harmful fumes dissipate quickly, making the cleaning process safer.
-
Use Protective Gear: Using protective gear enhances safety during the cleaning process. Cleaning professionals recommend wearing gloves and goggles. These items protect the skin and eyes from harsh chemicals in the cleaner, reducing the risk of irritation or injury.
-
Alternate Homemade Solutions: Alternate homemade solutions can be effective for those seeking chemical-free options. Experts suggest mixing baking soda and vinegar as a natural cleaner. This combination creates an effective, environmentally friendly solution and is safe for various oven surfaces.