GoodRVfood.com

We've found that our grey water tanks fill up more quickly than our black water tank does, especially if we shower in our rig rather than using the campground showers. Now we keep catch pans in the kitchen and bathroom sinks so that we can capture some of the grey water from fruit and vegetable washing, hand washing, and dish washing before it goes down the drain and pour it down the toilet instead. As an added bonus the warm soapy water helps liquefy black water waste as well.