Dierberg Essential Everyday Slow Cooker Liner
Skip; slow cooker liners prone to PFAS coatings, Glad silent.
These plastic film liners are typically treated with water and grease-resistant coatings that may contain PFAS. Glad won't disclose the coating chemistry or PFAS status.
The safe swap
If You Care
Slow Cooking Liners
100/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Plastic film liner, coating unspecified
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Non-stick, chemistry undisclosed
Advertised as non-stick but coating type is not explained.
Category baseline
PFAS exposure happens more often with clothing products.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
Fluorinated coatings and heat stability
Slow cooker liners claiming non-stick properties often use Teflon-type coating or other fluorinated polymers. Glad's silence on this product's coating means the presence and migration behavior of such coatings is unknown. At slow cooker temperatures (180-300F sustained), some fluorinated coatings can degrade and leach into food.
Plastic polymer leaching
The base plastic film composition is not stated. If the liner is standard polyethylene or polypropylene without PFAS, it may still leach oligomers and processing residues when heated for extended periods (typical slow cooking is 4-8 hours). Heat and acidic foods (tomato-based) accelerate this process.
Microplastic fragmentation
Thin plastic film liners are prone to physical breakdown during use and washing. Repeated folding, unfolding, and exposure to heat causes creasing and micro-tear formation, with fragments potentially mixing into food, especially in stews or liquids where agitation is high.
Off-gassing and odor
Plastic film liners often emit volatile organic compounds (VOCs) when first heated, particularly at higher slow cooker temperatures or if the product was stored in warm conditions. Odor does not always correlate with safety, but absence of disclosure makes it impossible to identify the source.
What’s reassuring
BPA & bisphenols
No recall or testing data exists for this specific product. However, some plastic film liners use epoxy adhesives or coatings that may contain BPA derivatives. Glad has not published analysis ruling this out.
Source: FDA ↗The full breakdown
What it's made of and why it matters
Dierberg Essential Everyday Slow Cooker Liners are thin plastic film designed to line slow cooker bowls and prevent food contact with the ceramic. The exact polymer type and any non-stick coating chemistry are not disclosed by Glad on packaging or available product documentation. Slow cooker liners marketed as non-stick or heat-resistant are frequently treated with fluorinated compounds to achieve those properties, and the lack of transparency here raises red flags about what coating, if any, may be present.
The brand's record and disclosure
Glad (part of Clorox Company) has a history of minimal disclosure on food-contact plastic products. For this specific slow cooker liner, no safety data sheet, material certifications, or PFAS statements are publicly available. Glad's broader product line includes items flagged by third-party safety advocates for lack of transparency on chemical coatings. The company has not issued a public commitment to eliminate PFAS from food-contact plastics.
How it compares in its category
Slow cooker liners are a category where PFAS and fluorinated coatings are common industry practice to achieve non-stick and heat performance. Competing products (Reynolds, generic store brands) also typically do not disclose coating composition. This product offers no competitive safety advantage and no published testing to distinguish it from peers. Alternatives include uncoated parchment paper (compostable, no coating risk) or cooking directly in the ceramic bowl without a liner (eliminates plastic entirely).
If you buy it
Do not use at temperatures above the stated heat limit (typically 400F for plastic liners). Never allow the liner to contact the heating element directly; position it only against ceramic surfaces. Replace after each use; reuse accumulates micro-tears and increases leaching risk. If the liner melts, discolors, or shows visible damage, stop use immediately. Monitor for any odor during heating, which may signal off-gassing of coatings or base polymer.
What we don’t know
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Glad has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Slow Cooker Liners
If You Care
Slow Cooking Liners
Unbleached parchment paper
Thermal degradation and smoke at high heat
Limited concern
Mold or bacterial growth if stored wet or damp
Limited concern
Adhesion failure and paper fragments in food
Limited concern
Lower-concern option; parchment with verified PFAS-free certification.
⚠Risky category by default
Reynolds
(2 pack) Reynolds Kitchens Slow Cooker Liners, Small (1-3 quart), 5 Count
polyethylene/plastic liner
Lower PFAS concern; basic plastic unlikely to contain PFAS.
⚠Risky category by default
Glad
Slow Cooker Liners - 4 Pack
Plastic (polyethylene or similar polymer liner)
Lower concern; uncoated plastic, but Glad doesn't confirm PFAS status.
⚠Risky category by default
More slow cooker liners grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.