My gelding has to have breathing supplements every day. He's on full livery and therefore fed everyday by the YM. The YM wasn't giving him the supplement, so I spoke to him about it and he started giving the supplement. I've recently realised that he wasn't administering it again, so I 'booby trapped' the supplement and sure enough, I 'proved' that it wasn't been given. I text the YM and he said, yes, the supplement is being given. Now I know that the YM is prone to the odd porkie, although trustworthy in every other way. So I have a dilemma. I'm not usually a chicken but I don't feel like I can have it out with him. How do I say, I didn't believe you so I set you up and proved you to be a liar! I'm not there everyday, so can't give it myself. Help!