on the topic of the worms in horn:
I know that in certain industries any wood products must be certified "insect free" to minimize the movement of harmful critters, ie. Emerald Ash Bores here in the Midwest. One way I know of that is used is by heating the wood (pallets) to around 150deg F, thereby killing all the bugs. I wonder if something as simple would work for horn. I had not considered that they were introduced from within the product, I had always guessed that the damage was caused by something introduced later (moths, etc.) I'll try it and see if the horn delaminates at all.
