Ned Jr. said:
I always give injectable ivomec. If I have them in a chute anyway I'd rather inject it. I've read the reason ivomec has became less effective is partly from people under dosing and the article partly blamed pour ons. It said pour on didn't always get good contact with the skin and was affected by weather. The low dose doesn't kill them and basically vaccinates the worms against its effectiveness, builds immunity.
Yep, injectable ivomec is the most efficient of the avermectin products. Why not use Safeguard drench? The applicator works pretty well and it sure is an effective way to control worms, actually eliminates more worm species than Ivomec anyway. I realize it isn't as easy as an injection.
Here's an idea, buy a feed through with Safe-guard and you won't even have to run them through a chute unless you want to de-lice
them. Injectible ivomec won't get external parasites either. Honestly, the feed-throughs with Safeguard work really well.
Hope this helps!