I did my wife’s caribou DIY euro velvet this year. The taxi wanted to cut the horns off and put a fake skull on because it’s a hassle to keep the velvet and euro I guess using beetles, they want to eat it all. He wanted $800.
So I talked to a buddy that did it, told me to use yellow bottle heat. I injected it into the bottom around the base, then used a spray bottle and doused the rest until it was running off. I then wrapped it in plastic bags and sealed it up, spraying fresh Heat on as I wrapped it. Tape it up well, let it set for about a week. I then I wrapped it and let it dry with a fan on it.
The skull was smelling good by this time, boiled it out only submersing time the pedicle. Plastic cling wrapped the antlers and power washed it. Turned out perfect, $800 extra for next year!
That stuff is not good for you, so mask, glasses, gloves, ventilated area etc.