We have always used this product with our RVs and we have never had an odor issue until the time we ran out on a longer trip. Definitely noticed the difference without it...yuck! And I am very careful about what goes in our tanks. We had to use Tank Blaster when we got home to restore them to their clean condition. So this year, I bought two bottles for our rig. Prevention is always better than having to cure the problem.
Rating:
[5 of 5 Stars!]