Lye?

We've been making our soap with lye that we acquired years ago. It's a huge bag, and we still have several batches worth of it left, but we're not sure where to get more once this is gone.

We're in a pretty small town, and none of the places here carry it anymore. Even the Farm and Ranch Supply store, who has access to good chemical places, can get it. It all has to do with "The War on Drugs" and meth labs. They use lye too, see, and now it's almost impossible for us to get it. I'm guessing that we may have to even prove that we use it for our business.

So my question to you all is, any ideas on where I can get some lye? We'd rather buy in large quantity, but we'll take what we can get.