Last time my vet wormed my pigs he gave them a shot of ivermectin... Soo..i was wondering can i do this myself? I have cattle ivermectin5% Pour-on...(that i use on my chickens) So how would i use this on my pigs? On their neck area or orally?? Would it be SAFE for them?? And how much do i give? Not sure how much my pigs weigh either.... maybe 50lbs? The vet didnt even weigh them last year... just gave them the shot.. so i dont know how much they weigh. Thanks for any help!