Yara (PA352LU53 Odorlos Holding Tank Treatment - 68 oz.

I used to use the West Marine Extremin Odor and it worked pretty well. It was kind of messy for measuring and had a deep blue dye plus it was loaded with chemicals! I find this stuff painless to use and works better that the chemical crap I was using before. Here are some reasons why:-Contains enzymes to clean your toilet system (great for us vacuflush users!)-Uses a bacteria to kill the smell NOT some harmful chemical-Easy measuring spout so you don't have to make a mess measuring-Concentrated so it contains lots of liquid for many pompousOverall I would highly reccomend this treatment to any boater or rv'er looking for quick, easy, harmless and useful product!

I have b een using this product for about two years. Previously I used the granules which worked fine as well, but I thought this liquid would be less muss and easier to use. It has turned out that way. I really like the liquid better. Functionally, they both do a good job. Highly reccomend this product for black tank use. It keeps things flowing down hill smoothly.

Works great with my Bighorn 5th wheel. Zero odors when used as directed.

Easy to use and very effective

Best holding tank treatment around. Instead of "minty" smell all through your boat, you have no odor at all. Great stuff, great price.

So far so good, this one has helped the most of any product

Doesn't take care of odors

Love this stuff! Works better then anything else I've tried.