I used two different types of bathroom caulk to seal up  where a shower drain meets the wall. In both cases, in a matter of weeks, the caulk peeled off and the shower started to leak again.  This stuff goes on like liquid rubber. It gets everywhere like paint.  I got a big glob on the front of my head. Don't ask how. I have a wedding to go to next week. I panicked and was going to put acetone on my head, but didn't want to look like the guy from Powder.  I googled, and binged. I found peanut butter. Luckily I don't eat chunky, and the black goo came out with enough PB and no J to feed a small family.