AimlessWanderer
Remember to forget me!
I've had to throw two soaps away for turning nasty, and use them differently now. I keep the parent puck dry, and serve up a portion of it in a dish/bowl. When that's used up, I'll serve up another portion, either of that or something different, but the parent soap goes nowhere near brush or water. I've not had to throw any soaps away since doing that.