I need to worm my horse but unsure how much to give him - I can't get to an equine store till next week. Is there any other way of determining how much to give?
It's difficult to OD with wormers - as a one off treatment. I used to give Amy a full tube prior to being pregnant and she is a little cob weighing around 528 kilos.
It is almost worse to underdose than overdose with wormers, as you can build up resistance that way. Some wormers only go up to 500kgs, some go up to 700kgs and others go to 575kgs. Definitely worth holding off until you get a weight tape I would have thought.