Standard liquid soap is second best for me ... But I've been using the same formula since I found it, and it's been fantastic. 7 Hand Soaps That Fight Germs, From Cheap to Luxury: See at Cnet ...
Castile soap is safe to use around the genitals, but you may want to choose a mild or unscented formula. Always dilute liquid formulations as instructed. Castile soap may also be an option if you have ...