Just found out yesterday ... all worming tablets (including vet ones) DON’T give long term protection! I assumed that as you have to worm them every 3 months, they were actually protected all that time ... but they’re not!
So lovely dcat who is an avid hunter basically could permanently have worms. In the past 3 months he’s been wormed 3 times due to me finding worms on him twice. I asked the vet why he keeps getting them despite being wormed religiously 3 monthly ... that’s when I found out. So the tablet actually only kills the worms they have at that moment, meaning if he hunts the following day and eats something contaminated, then he has worms again!
I assumed they gave long term protection the same as flea treatments ... but no.