Guaranteed broadest spectrum parasite control with the most complete bot control available. Kills some benzimidazole-resistant strains of small strongyles. Can be used on horses of all ages--even young foals. The IverCare Sure-Grip syringe offers ergonomic design with a short plunger design for easier de-wormer application. Extended contoured Sure-Grip handle makes syringe operation smoother. Variable dose setting mechanism for accurate dosing. Ribbed safety tip for easy access and no overhang that could result in unintended removal or spillage. The Sure-Grip syringe fits comfortably, even in small hands, and enables faster de-wormer application. The extended contoured sure-grip handle offers more precise control, while the non-slip thumb "saddle" makes syringe operation smoother. Ivermectin paste 1.87%. One dose treats horse up to 1500 lbs. .26 oz. (7.30 g) syringe.