Do they sell this at Tractor Supply stores? Im pretty sure the chickens i just bought have mites! Should i just follow the directions that it comes with or should i do something special? ***UPDATE*** I wiped their butts off with a towel and water and put the sevin dust on them. This stuff works great! I checked my 4 seramas this morning and all of them appear to be mite free!!! I'll probably repeat it (not sure when) just in case. It didn't seem as strong as some have made it seem though. I thought it was going to burn my husbands skin or something,lol. Thanks for the advice!!!