I'm going to do it if I can find the one I didn't use in the kitchen. My plan was to use it in the bathroom but it has sprouted legs and gone for a walkabout. It has to be here somewhere! I've even checked the burn pile!

I did one in both bathrooms and would do it again. Only
caveat is that if you have granite countertops, make sure
you use mild soap. Anything like Dial will stain the granite.