Lidoband Castration Bands with Lidocaine 80mg, 40 CountLidoband Castration Bands with Lidocaine 80mg, 40 Count Lidoband is designed to improve animal welfare during livestock castration. Each band contains 80 mg of lidocaine and a skin permeation enhancer, allowing the anesthetic to absorb through the skin within as little as 2 hours and remain effective for up to 42 days. Ideal for calves up to 250 lbs and lambs up to 50 lbs, Lidoband provides a simple, bloodless, and cost effective castration method