DO NOT USE DRANO TO MAKE SOAP!!!!!!!!!
Yes, I am shouting. If you are going to make soap, or cure olives, only use pure lye. Drano is not pure lye.
And actually, if you have blocked plumbing, don't use Drano for that, either. It probably won't remove the blockage and most plumbers will refuse to work on your plumbing if you've put Drano down the drain before you call them.
So you need to show ID. So what? You need to show ID on order to purchase several different items, like cigarettes and booze and spray cans of paint. Show your ID, buy your Drano, and get out of the store and get on with your life. It's not worth working yourself up into a self-rigtheous snit over it. If you don't like it, get involved in a letter writing campaign to your local law makers and work to get it changed. Do something about it. Whining doesn't do anything about it.
Putting ephinephrine behind the counters hasn't stopped Meth in Oregon, but it has nearly stopped Meth manufacturing. The meth labs were poisoning houses, the air, and the ground water. So at least they are no longer poisoning the rental houses and bathrooms at the rest stops in my area. That's a big plus in my book.