I actually thought this was going to be a good product that myhorse would stop cribbing all our trees and our barn anything that has wood on it i was hopeful but it turns out that we used the entire container of supplement and it didnt do a bit of good it actually made it worse shes cribbing worse than before the supplement was used i will not buy this product again ive always had a good outcome with everything i buy from amazon but this one didnt work im disappointed thought this would be a good solution to our problem with horses chewing trees woord posts railings barn framingpretty much anything wood