Earlier post discussing this
So after doing some research - it looks like this may be able to resolve the sticky / tacky issue with reaper bones:
I ordered a can and once it comes - I'll try it out and see how good it works, and update you then.
Just a reminder:
If you use spray paint or other stuff like this - make sure you protect your lungs. I use a respirator when working with any thing that makes fumes, and you should too! Also - do this outside, not in a small hobby room.