Paste, pellets, and liquid wormers are all effective forms of horse deworming products. The choice ultimately depends on the preferences of you and your horse. Paste is often more accessible and easier to administer, especially for first-time horse owners. Pellets can be mixed with food, making them an attractive option for horses that may resist paste. Liquid wormers can be given orally or mixed with feed like pellets, but proper dosing is essential for effectiveness.