I haven't tried the lye yet, but absolutely nothing else worked for killing the oleanders. I've cut a few down to ground level, drilled the holes for the epsom salt method, a special product from Home Depot (don't remember the name), Ground Clear (perhaps that what you meant when you said Yard Clear?), burned it, soaked it in gasoline and burned it, covered the entire stump with a black opaque bucket... Now, I've buried it beneath my compost pile, not that I have high hopes there, either. It comes back strong as ever. It was even growing, despite NO sunlight, enough to start pushing the bucket up off the ground! Aside from digging the entire thing up, I've had no luck at all.
Yes, Ground Clear is what I meant. I have'nt used it on oleander (my new place in Marana doesn't have any), but it works great on mesquite stumps that keep trying to grow back.
As far as the blind snakes go, they love fallen leaves and loose litter, you will usually find them when raking up this stuff that has been undisturbed for a few years. They definitely don't like the sun! If you have "desert landscaping" you won't see many at all.