For Darwin
Senset Skin Cleansing Foam - 300ml have a look at this it is used for humans might help if you have a read up - Senset do wipes quite a few things....used in nursing, Ebay has the foam, otherwise it is from specialist suppliers
The idea is to stop the skin breaking down and it cleanses and moistures etc and is for very sensitive areas.
Thank you, I?ll have a look.