Please advise. I have a baby squirrel that has lost all the hair on his tail and now the hair on back is thinning. I have Ivermectin. The Wild Baby Mammals book says to dilute it with 9 parts water. In the past, years ago, I put one drop straight from the bottle on the skin and did not dilute it. I have the Squirrel Manual by Shirley Casey and she does not mention it being diluted. Can anyone advise.