Has anyone used this on their child? I put it on my daughter (3.5) last night and she walked around the house foaming at the mouth for over an hour. She kept telling me her tongue hurt. I ended up taking it off with nail polish remover, brushed her tongue and washed her hands again. This morning she asked if she could suck her thumb (she didn't all night), tried to and found it still tasted bad. I feel like a terrible mommy but...I think it may be working.

Has anyone else used this? What was your result?