JB No Chew stops animals from chewing on trees, stalls, fencing, wiring and pipes. Great for horse lovers! Horses are notorious for chewing on the bark of trees in the pasture and the corral boards and stalls. Put a stop to this destructive and costly behavior with JB No Chew.This unique chew deterrent is the only one on the market that will actually help wounded trees heal. This asphalt based product acts as a liquid bandage to keep infection out, promotes healing from the inside out, and by its natural make up, lasts a long time.