Fels Naptha Laundry Bar Soap vs FLY FREE ZONE Tuff Stuff Stain Remover: which is safer?

Fels Naptha Laundry Bar Soap is our pick: better on PFAS and on the overall hazard picture.

Our pick

Fels-Naptha

Fels Naptha Laundry Bar Soap

PFAS grade

C 75/100

Overall grade

F 63/100

Verdict

Buy

Hazard flags

⚑ 3

Material

Soap base (tallow, coconut oil, other saponified fats), hexachlorophene preservative (historical)

Confidence

78%

PossibleFragrance allergens and skin sensitization

PossibleSodium silicate alkalinity

PossibleMicrobial growth on bar storage

Why this gradeBuy

Tuff Stuff

FLY FREE ZONE Tuff Stuff Stain Remover

PFAS grade

C 75/100

Overall grade

F 53/100

Verdict

Buy with care

Hazard flags

⚑ 4

Material

liquid stain remover, surfactants and solvents

Confidence

60%

PossibleVolatile organic compound (VOC) / inhalation risk

ReportedSurfactant residue on fabric

PossibleSkin irritation from direct contact

Why this gradeBuy

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 treatment sprays: see the full ranking