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Used at recommended dosage and duration, DrainScrub is guaranteed to solve your clog and odor problems.

  • IMPORTANT: Apply at night, or when drain won't be used for 6-8 hr after.
  • Mix with warm water.
  • Mix and apply as shown at right.
  • In multi-story homes, do initial 5-day treatment in basement, then repeat for each floor going up.
  • Avoid using antibacterial/antiseptic products in drains.


Mix 1 scoop DrainScrub with 1 quart warm water (won't digest recent hair clogs)

Floor Drains

Mix 3 scoops DrainScrub with 3 quarts water.


Mix 2 scoops of DrainScrub with 3 quarts water (don't flush)


Mix ½ scoop DrainScrub with 1 quart water (add while running, then turn off)

Septic Tank

Mix 2 cups of DrainScrub with 2 gallons of water (flush, then flush 1 cup DrainScrub each following month)

Septic Field

Mix 4 cups of DrainScrub with 2 gallons of water per 50 feet of pipe (apply via vent or clean-out)


Mix 1½ cups of DrainScrub in 1 gallon of water and pour on waste the first time. After, mix 1 cup with 1 gallon of water and apply monthly.

Marine & RV Holding Tanks

  • Black water tanks: After first use of toilet add 2 scoops though toilet.
  • Grey water tanks: After first shower mix 2 scoops with 1 quart of water and apply into drain.

Treat again after dumping tanks. If odor is noticed between dumps, add an additional 1 scoop.

Sumps with Pumps

Mix 2 scoops of DrainScrub with 2 quarts warm water and apply.

Litter Boxes

Sprinkle ½ scoop of DrainScrub into dry, empty litter box. Place litter on top of DrainScrub.

Dog Septic Tanks

Mix 1 scoop of DrainScrub with 1 quart of warm water.

GHS Precautionary Statements

  • P261 Avoid breathing dust or mist
  • P313 Get medical advice/attention