I've owned an OTTB chestnut mare for over 8 yrs. She's not a destructive cribber, more of a wind sucker (even when out in the pasture.) Her previous owner used an older traditional cribbing strap that was completely ineffective. Since the Weaver Miracle Collar had good reviews, I gave it a try. It worked instantly and stopped her cribbing. I just ordered my 2nd collar since the first one wore out from weathering after 8 yrs. Here's a few tips I've learned over the years:1) Keep the head area cleaned daily by grooming. I live in sandy climate and the sand gets under the collar and causes irritation.2) Keep the collar well conditioned and clean every day.3) I find it's more effective by rotating the collar off and on with my mare. I will leave it on her for 5-7 days and then remove it for 24hrs or so. This gives her a break and then seems to be more effective when I put it back on. I have tried the fleece covers, but they get dirty quickly in my sandy terrain. Clinical studies show that nothing stops cribbing 100%, but this product is very effective when properly used.