Camco TST Camper/RV Grey Water Odor Control - Removes Grease Buildup in Gray Water Tank, Sink & Shower Drains - 4oz Treats 40-Gal Holding Tank - Safe Septic Tank Treatment - Lemon, 64 oz (40256)

I always use this when I take my trailer camping. Many people forget to treat their grey water when they go camping and only add treatment to the black water tank. It is necessary to make sure the grease breaks down and doesn't sludge up the tank. It also keeps the smell down. I recommend using more than the dosage recommended on the bottle. I use about half a bottle when I go camping. It is cheap insurance and worthy preventative measure that can save you money in the long run on tank cleaning fees. It is super easy to use, pour it down the sink and add some water. It is very effective at keeping your tank clean.

Prevents any order from developing from the grey tank residues. Keeps the grey tank smelling nice for long periods with simple treatments.

good nice smell

Works as well as any other

This keeps odors away. Great product

Keeps odors at bay in your grey tanks of your camper. Easy to use, very effective.

Another great Camco product! Solved our rotten egg smelling grey tank problem on the first treatment!. Thank you Camco!

Did not work as expected

Works great to eliminate order in your grey water in our motorhome. Love the lemony smell, it smells clean not like a chemical smell

I have used both the powder and the liquid. Never had a problem with smell. I would recommend this brand.

We have a seasonal lot for our RV so we use it on weekends. When we leave, we empty our tanks and then they sit empty all week in the heat. The tanks can smell after a while so we bought this and used after opening after winter and will use again mid summer. Used it last year and it really helped!

Easy to use and has a nice smell .

Love the product and very competitive price.