I will tell you from experience that they do not like anything that did not go thru you first. Wipes, q-tips, hygene products, those little disposable bowl cleaning pads or paper towels absolutely positively will clog the impeller. Make sure you have a good pair of medical forceps or long needle nose pliers handy because someone will eventually test that theory.
We use ours at what we call our Family and Friends Camprground. On a holiday weekend we might pump out 6 or 7 RV's. We have a septic system but not sewer hookups for everyone. Great item when used properly. Just like a dump station, black first, then gray.
