Hi,
I am not a homeopath but just a mother who has been through the same thing - . the oats shouldn't be messy - you need to put them in a sock or stocking and dangle them in the water rather than put the oats straight into the water - this is less messy - but if there is no longer itching then the spots might scab over and fall of quicker without oats.

I didn't treat my two children as they seem to be coping with it by themselves.

Hope he is better soon.

Linda