Urine Destroyer vs 303 Marine Fabric Guard: which is safer?

Resolve Urine Destroyer is the clear pick. 303 Marine Fabric Guard carries a failing PFAS grade, and we never recommend buying a failing product.

Our pick

Resolve

Urine Destroyer

PFAS grade

A 100/100

Overall grade

D 68/100

Verdict

Buy

Hazard flags

⚑ 5

Material

aqueous enzymatic cleaner solution

Confidence

82%

ReportedEye and skin irritation (surfactants and preservatives)

PossiblePreservative allergen risk (e.g., methylisothiazolinone if present)

PossibleFragrance allergens

Why this gradeBuy

Zout

303 Marine Fabric Guard

PFAS grade

F 45/100

Overall grade

F 15/100

Verdict

Skip

Hazard flags

⚑ 4

Material

fabric treatment spray, composition undisclosed

Confidence

35%

LikelyVolatile Organic Compounds (VOCs) / Solvent inhalation

PossibleFluorine-based water repellents (beyond PFAS)

PossibleSkin sensitization / Fragrance allergens

Why this grade

Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →

More fabric protection & stain-resistant sprays: see the full ranking