UPDATE on the UPDATE!
I finally found some USA made raw hides, more bully sticks for a pretty decent price and another digestible bone that was a little less expensive, but the pet shop said it was good. I also got the black, super kong. I put his food with peanut butter in it and threw it in the freezer for a few hours. He seems to like it! We'll see how he does tomorrow with the new kind of raw hide!
UPDATE From Sidka's Mum:
It was virtually IMPOSSIBLE to find raw hides that were not overseas. So, we decided to finally try bully sticks. Man, Sid goes through those FAST, FAST, FAST and they're expensive...So we also got the edible Nyla Bones that are completely digestable. Both Sidka and Josie love them. We have to get Sid the souper size (!) and Josie the regular size (versus petite, she went through that too fast!). So, I tend to think they're not as...durable as I'd like. I like them, but also expensive, so they're limited. Raw hides lasted so much longer for Sid...but no USA rawhides to be found so far! Any suggestions?
We might try another, super, super, super tough (the black, I think) kong with frozen something or other inside it. Anyone else have powerful chewers that need to be crated for 4-6 hours a day? What do you leave with them?
We're hoping to eliminate any raw hide that does not come from the US and that way, his ALT levels may go down. If not, Sidka might get Marin.
If that helps enough by May 24th or so, Sidka will get his vaccines that are due by May 28th. If not, we'll see!!