This may seem like a strange topic but for all of you that have pets and little children I just read an article of how toxic our urine is (perhaps sweat) when we are trying to rid our system of the by products of chemo that we urinate out. They say to flush twice to rid the bowl of the toxic waste. This can be very harmful to pets that drink out of the toilet bowl. Yikes!!! My dogs do not but I know a lot do. Just a warning to protect all of our canine companions!!!