anthelmintic & boticide means it kills adult parasites as well as larvae stage parasites (bots).

Edit: could also be referring to a type of parasite named botfly.

bots are one of the many pests that can bother and potentially harm your horse. Bots are a variety of fly, and even though they live part of the life inside your horse, they are not a worm. Parasite, yes, worm no.

anthelmintic & boticide means it kills adult parasites as well as larvae stage parasites (bots).