Hi all. I rescued a weanling that had been poorly cared for. My vet and I suspected a worm problem. 8 weeks ago we gave a Panacur series. I checked all week (in poop) to see what we were dealing with and zilch-nada. 2 days ago I wormed with Strongid and low and behold I found around a half dozen worms today and yesterday. I think they are Ascarids but they might also be pinworms as they resembled earthworms in size (4-6"s) but were a little lighter in color. Question: 2 of them were still alive! I thought that wormers killed them? Because I have found worms should I adopt a special program or just stick with a regular 6 week rotation for the time being? If they have migrated will the wormer still get rid of them? NE knowledgeable advise appreciated!

I would definately keep on a regular deworming schedule, but also speak with your vet. There can be dangers if a horse is heavily infested with worms. Just talk with your vet and get a list of symptoms to watch for. Also if you have other horses make sure that you are deworming them at the same time. This way you are not transfering worms back and forth.

You need to take some of them to your vet and figure who they are. Then even though you just wormed you need to worm again using the drug designed to kill that species. Horses always have worms either eggs or adults, they are ground eaters that is where everyone else poops. So they are constantly injesting them. Most wormers attack only the adult worms, they do not kill and remove larvae and migrating stages. So those are the ones that you are seeing now. This is especially true for strongyles and ascarids.