I did the glue tip to my tank. Unfortunately you will never see all of them, they're going to be hidden somewhere that you'll over look or just not be able to see. Then they'll start popping up all over the place. And you're thinking "but I glued those things". I have way too many in my tank. And I hate em because they're everywhere and not appealing
Once they are in your tank I doubt you would be able to completely remove them. I've never personally used them but supposedly bumble bee snails might eat them, but I'm not sure if the bumble bee snails are completely reef safe or not. Some websites say they will eat sessile inverts (which I believe corals are sessile), but most say they are coral safe. I have enough vermetids in my tank that next time I order CUC I will probably include some.