The horse paste you have to be careful with dosage.
That's what I thought to but it always get rid of my mites. You give more ivermectin to a sheep than you do safeguard so I figured its probably not enough but I'm not sure.
I think ivermectin kills roundworms. I do like 3 drops down their throat and on their back (I use ivermectin sheep drench) and safeguard goat dewormer 6-9 drops every 30 days.