This size container will get you through most of the summer with an rv, if you don’t clean the tank out every time. You get 3-4 uses. Seems to work well, has a pleasant smell. The best part is that they don’t do animal testing and it is made of natural products. It makes me feel better to use things like this. Drainbo is the way to go! Will be purchasing more of their products.
navycamarogirl via Homedepot.com Brockport, NY January 7, 2016