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Thanks Daffy, been away so sorry for delay. Bed fine and don't use harsh shampoos. He likes swimming in the sea so generally rinse him and dry with a drop or two of tea tree in the water. Keeping him on dry land for a while.
Fewer spots tan last week. Don't think the vet I saw was very clued up so will try again with different one. Also he is a very sociable dog so temporarily walking him where he wont meet so many dogs to kiss and roll with!