DD is almost 3 1/2yo and has sucked her thumb since she was an infant. We have gotten her to where she does not suck it unless it is bedtime; however DH and I would really like her to stop completely so she doesn't damage her teeth. Our babysitter successfully got her to stop sucking it at naptime but her method (having her sleep on her stomach with hands under her pillow and if she put it in her mouth the sitter would gently remove it and replace hand under pillow) doesn't work at home because we can't constantly check on her once she is in bed. I really don't want to use the bitter nail polish stuff but the other options of hot sauce and vinegar won't work because DD likes those flavors. Anyone have a suggestion?