And here’s another little crevice I need to do something about. It looks like whatever caulking material the builder put in is disintegrating. However, I have no idea what product they used, and Home Depot wasn’t any help. I’m leaning towards just using a regular tub/sink white caulk, but I don’t think it needs to be adhesive, so I’m not sure such a caulk exists. Does anyone have any ideas?