Harvard Chemical Pet Stain-Off

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Harvard Chemical Pet Stain-Off
  • One step removes urine stains and odor
  • Multi-surface use
  • pH: 5.8
  • Safe for stain-resistant carpet
  • Variable dilutions
Product Name Price Qty

Harvard Chemical Pet Stain-Off, 32 oz

Item # HC-PSO-EA

Size: 32 oz     Qty: 1

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Harvard Chemical Pet Stain-Off, 32 oz (12 PK)

Item # HC-PSO-CS

Size: 32 oz     Qty: 12

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We pay the shipping on this product with $350 of qualifying items (Details)

Harvard Chemical Pet Stain-Off (1 GL)

Item # HC-PSO-01

Size: Gallon    Qty: 1

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Harvard Chemical Pet Stain-Off (4 GL)

Item # HC-PSO-04

Size: Gallon     Qty: 4

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Product Information

Remove urine and fecal stains and odors the natural way with this bacterial enzyme blend. It works equally well on carpet, upholstery, and hard surfaces.This terrific bacterial enzyme chemical blend is designed specifically for removing stains and odors from fabrics or hard surfaces using the environmentally friendly, all-natural bacterial digestion method.


Urine and/or fecal matter stains and odors vanish fast; prep time is even faster!


Dilute the product up to 1:4 with warm water for spotting or mix it at a dilution ratio of 1:10 when you substitute this product for standard shampoos or detergents in situations that call for a serious solution to an extreme odor problem. This versatile product can also be injected underneath stains to treat offensive padding odor dilemmas.



Urine and Feces Stain Removal from Carpet:

Urine is a difficult spot to remove. The older the urine, the more the spot may be permanent. Female dogs and cats have higher levels of nitrogen in their urine. The higher nitrogen attacks the dyes in the carpet, usually leaving a lighter stain on the carpet. Some urine stains are not noticed until after the carpet is cleaned. If there is a true stain, this can only be corrected by dying the carpet. Stains are permanent otherwise.

This process is bacterial/enzymatic. It removes feces and newer urine stains and odors from carpet, upholstery, and hard surfaces.


Recommended Basic Method:

  1. Using a vacuum, bone spatula, and hand towels clean up any solid waste from carpet first.
  2. Saturate stained area and allow to penetrate into surface.
  3. Pour 2 oz of warm water, not hot, onto stain to activate product.
  4. Allow Pet Stain-Off to soak until the stain disappears. This could take up to 24 hours to completely digest the stain.


Brand Harvard Chemical Research
Spot Type Urine
Chemical Type Enzyme/Biological Based
Material Carpet, Tile, Upholstery
Product Type Liquid
pH 5.8 - 10.0
Category Deodorizers, Pet Odor Chemicals, Spotters
Condition new