Meet the Toddle Happy Germ Hand Gel the Worlds Most Natural Probiotic Hand Gel. Most hand gels kill off all germs with nasty alcohols and acids, but our 100% natural Happy Gut Hand Gel doesn't. Toddle's hand gel is a bit more intelligent than that. They use happy germs, like the cultures found in fancy yoghurts, to help improve the skin's natural barrier. Happy germs have been found to have a host of benefits, so you don't need to worry about your little one being exposed to anything nasty.