My rescued four-legged mare has had a congenital front hoof defect with episodes of progressive abscesses for years, dipping her foot in a makeshift pool of urine and manure primarily for relief after hoof trimming, apparently from times of soaking laminitis (she's very smart but not a doctor). She fell several times and almost died. She is free in the big paddock. I was able to cut open her legs, put on a medical pad, cover her with the bottom half of my sock for a quick fitting as she could barely shift her weight to the other front foot for a few seconds, and put on my longer sock on top of that. . Then put on a boot, in her case a size 5, but I also bought a size 6 so there is more room to change. I've been changing all settings every 3 days for about a month while she's recovering and have watched the fly larvae as they spawned once initially and were controlled by pouring some alcohol around the toe of the boot. between cures. She recovered, also took penicillin every day for a month and after further trimming the hoof was free and growing well. Great product that did a great job and now that my foot is better and doesn't need treatment pads I'm switching to boots that offer better ventilation and a more active walk. I have used 4 boots to be able to clean and dry them after each cure and they have all withstood bites before wearing the boot on display and they are all reusable.