Review on 32 oz Camco TST Probe Cleaner - 41146 by Steven Murray

We followed directions and drove about 45 miles to our camp. When we got there, we emptied the tank and checked the sensors; this time they showed EMPTY! Yes, that hasn't been the case for a long time. We've tried Calgon and Dawn before and it didn't work. When we ejected and left the campsite, the gauge showed 1/3 full again. Probably because there wasn't enough water in the tub to dissolve the toilet paper and it was stuck to the walls. GRRRRR! We're going camping again next week so we'll take advantage of that before we winterize the camper to make sure there's nothing left in the tank.