STAINMASTER PetProtect with LeakDefense Comforting Coat III CROSSROADS Brown 70-oz sq yard Polyester Textured Indoor Carpet one_size
Polyester carpet with undisclosed stain and leak defense treatment raises PFAS concern.
This carpet features a proprietary stain and leak defense treatment with chemistry not stated. water-repellent coating and stain-resistant treatments have historically used PFAS. The brand has no PFAS statement on record and no certifications are listed.
The better-graded swap
TrafficMaster
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75/100 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
Polyester textile with proprietary stain/leak defense treatment
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What STAINMASTER PetProtect Carpet one_size is made of, ingredients and materials
This is a 100% polyester textured pile carpet treated with Stainmaster's proprietary 'LeakDefense' and 'Comforting Coat III' finishes. Polyester itself is stable when intact, but the stain and moisture-repellent treatments applied to the fiber surface are where chemical hazards concentrate. These treatments are typically fluorochemical-based (PFAS family) or similar persistent coatings designed to repel water and oils; the exact chemistry is not disclosed by the brand.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
PFAS
Stainmaster's stain and leak defense treatments are not chemically disclosed but are consistent with industry-standard PFAS chemistry. These chemicals accumulate in household dust and are not readily biodegradable; exposure is mainly via dust inhalation and hand-to-mouth transfer.
Source, ATSDR ↗VOC and aldehyde off-gassing
Polyester carpet backing and treatment chemicals can emit volatile organic compounds (VOCs) and formaldehyde during and shortly after installation, especially in warm or humid conditions. Off-gassing typically peaks in the first week but can persist for months in poorly ventilated spaces.
Antimony in polyester resin
Polyester fiber production sometimes uses antimony as a catalyst. While antimony remains bound in the polymer during normal use, wear, shedding, or incineration can release small amounts. Risk is low for household contact but higher if carpet is burned or landfilled improperly.
Azo dyes and colorant stability
The 'Crossroads Brown' coloration may rely on azo dyes or other synthetic colorants. These are stable when dry but can leach slightly if carpet is wet-cleaned repeatedly or exposed to moisture for extended periods. Risk is primarily to users with sensitive skin or young children crawling on damp carpet.
Microplastic shedding
Polyester carpet sheds microfibers with normal wear and vacuuming. These fibers accumulate in household dust and can be inhaled. Stainmaster's textured pile construction may increase shedding compared to low-pile alternatives, especially in high-traffic areas.
How is this PFAS grade calculated?
The brand's record and disclosure
Stainmaster (owned by Mohawk Industries) has not publicly disclosed the chemical composition of its LeakDefense or Comforting Coat treatments, nor has it committed to phasing out PFAS in carpet treatments. The brand does not publish third-party certifications (e.g.that would independently verify lower concern chemistry. Mohawk has faced litigation over PFOA/PFAS in textile treatments but has not issued a formal chemical transparency policy.
How it compares in its category
Most mass-market stain-resistant carpets use similar fluorochemical treatments; Stainmaster is mainstream rather than outlying. Premium alternatives (e.g., wool blends, untreated polyester) avoid synthetic stain treatments but cost more. Budget carpets without stain treatment exist but offer no spill protection. This product sits in the middle, practical performance but with hidden chemical tradeoffs.
If you buy it
Vacuum weekly and use a HEPA filter to reduce any particulate shedding. Avoid steam cleaning or excessive heat (over 150°F), which can degrade coatings and increase off-gassing. Spot-clean with water and mild detergent rather than solvent-based products. Plan replacement within 7-10 years; fluorochemical-treated carpet loses efficacy and can release more volatiles as it ages. Ensure good ventilation for the first 48-72 hours after installation.
What is not known about PFAS in this product?
- Basis
- Model estimate, 42% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Stainmaster has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to STAINMASTER PetProtect with LeakDefense Comforting Coat III CROSSROADS Brown 70-oz sq yard Polyester Textured Indoor Carpet one_size?
- wool plaid, Axminster weave
- We found no PFAS statement from the brand
- Formaldehyde / VOCs
4 hazards checked on this product, all on its full breakdown.
- polyester fiber, untreated
- We found no PFAS statement from the brand
- Formaldehyde / VOCs
4 hazards checked on this product, all on its full breakdown.
- Ceramic tile, porcelain, or stone composite
- We found no PFAS statement from the brand
- Volatile Organic Compounds (VOCs) from installation adhesives and grout
4 hazards checked on this product, all on its full breakdown.
More carpets & rugs 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.