I'm a Fish and wildlife technician at a New York State University and I'm starting a skull cleaning/skeleton preparation lab. I currently have a 50 gallon aquarium set up as a beetle box that has been going for 3 months and is working out beautifully. My question starts after the beetles have finished. I have been doing small skeleotons (squirrels, rats, fish, deer jaws) for a while now with no problems but with numerous students prepareing to work on larger fare (particularly a full skeketon of a mute swan) i'm haveing trouble getting the bones white. I'm useing 35% hydrogen peroxide as a whitening agent (ive been diluting to 3-5% should I be doing this?) but I don't use anything for degreasing. My question really is a two parter 1) what should I be useing that I can get in bulk for relatively cheap? and 2) where is a good place to find said degreaser?