Well, my mother has recently started a habit to be frugal, but I can't stand it. She will pee, leave it in there, let her girlfriend pee, make my brother pee, and let it pile until someone flushes. I find it repulsive, and even though pee is "sterile", I'm sure bacteria builds up. A concern of mine was that a sibling has hepatitis C and I was scared of contracting it, but it said that the only way was if there was blood in the urine. Anyway, how sanitary is this? Is is really that much more cost effective?