If your talking about the equimax/eraquell tabs, then yes I tried them, out of 3 horses, 1 ate them!!! And he's a greedy welsh boy!!! Other two spat them out! So won't be using them again, but I can see that they would be very good for a horse who likes them and who could be funny about paste worming.
Mine all ate theirs, although the newforest was not sure at first, the shop should have some placebo tablets for you to try so you know if your horse will eat them or not.
My mare thinks they are treats and groans with delight when she saw them for the second time lol, and the shettie who is a very fussy eater ate them too.
I've tried both the Vectin tablets and the equimax.
Mine loved the vectin (which was just like a herby treat) but not for love or money could I get any of the buggers (out of 11) to eat the equimax. No I lie, Ruby ate them, but she is like a goat and will eat just about anything.
Even Little Stig turned his nose up!