I have a cornicopia of veterinary preparations available to me. Right down to a bottle of 100 Bactrim. ;) My horse had surgery Easter weekend and was on Bactrim for a while. There was a bottle left over that he didn't need. HA! He was getting 12 of the DS twice a day. Now that bottle is mine in case the critters decide to carry bacteria elsewhere.
I've tried Quest Plus on my skin critters but it didn't do anything (moxidectin and praziquantel).
I have several different skin products with zinc or sulphur for the pony. I've been through his first aid box and this is the only thing that has really helped.
I -think- I have strongyloides. The rashes are unbelievable. They are everywhere. :(