I was enthusiastically using luffas for dish and body scrubbers but then I read a post somewhere by a plumber who said the edges can slowly break off and create blockages in pipes. Makes sense, especially in the kitchen where they might be gunked up with cooking grease and soft food particles. The house I live in was an amateur job by an insurance agent and his brother, and the plumbing often has issues, so I sadly stopped using my homegrown luffas, just in case. But glad to know about the dog toy - I will definitely try that one out next summer.