Answer by
Richard88 (391)
Two things: Treating welts, and preventing more. Chiggers like tall grass. Prevent your dog from contact with vegetation that could harbor chiggers. Use insect repellant like DEET on your dog's legs. Usually the chigger is gone by the time the welt appears. The welt is dissolved skin; treat like a small wound. See http://en.wikipedia.org/wiki/Trombiculiasis.