How can you kill velvet ants?

I tried crushing it with a cap to a drink and it pretends to be dead, when it notices you arent paying attention(it sounds wierd but this is what i observed) it slowly starts moving and the body slowly fills out, when i thought that it was in a slightly differant area of the plate i put it on while looking it up, i watched it for a minute and it didnt move. A minute later i looked back and it had moved a about 6 inches, and as soon as i looked it stopped (it was like we were playing red light, green light... i won) I crushed it with the cap again, but it once again started to move after a minute or 2. What you need to do is when u crush it with something twist while crushing (it grinds it) He(actually it was the female-no wings) did not survive that time.