I have been reading about treating my peafowl with Ivermectin for mites and lice, etc. Is there a type of Ivermectin that can be put in their drinking water? For health reasons (and old age) it is difficult (not impossible but really really difficult) for me to catch each of my 8 peafowl to administer medications so, if possible, I would rather treat them in their drinking water. Any suggestions?