For the treatment and control of common worms and bots in horses including large strongyles (bloodworms) (Strongylus spp., Triodontophorus spp.), small strongyles (redworms) (Cyathostomum spp.) Including benzimidazole (BZ) resistant strains, pinworms (Oxyuris equi), large roundworms (Parascaris equorum), hairworms (Trichostrongylus axei), intestinal threadworms (Strongyloides westeri), bots (Gasterophilus spp.) and lungworm (Dictyocaulus arnfieldi).