There is a reason you have had this problem. On an antelope, there is a musk gland right there, apparently it wasn't fleshed properly. The "Bag it, & Bomb it" will only give you temporary relief. You need to check and see if there is another reason for the moths, other than the mount. Bird seed, dog food, etc. There is only one proven and guaranteed way to prevent dermestids and/or moths - Miller's Trophy Room. I recommend them to my clients. It's not to say that the "Bag it & Bomb it" method won't get rid of the living ones, but it won't take care of eggs or reinfestation. And if you get dermestids they will even eat the horn, because it's modified hair, they eat African horns as well. I've seen some once in a lifetime trophies ruined. It's pretty cheap insurance, I think it's like $50 to have them treat a mount.