how do you get a snake OUT from your crawl space under house?
Snakes that could fit under a scrawl space generally would be pretty small, and they might not move very fast. If you don't have some kind of net & flash light or similar equipment handy, you might be better off calling animal control or a pest company.
Also, if the snake is poisonous, it could be dangerous to try to remove it on your own.
Moth Balls is best leave them under the house for 2 days and they will be gone for good also mice spiders ants fleas ticks any things that breaths it even works for turmites and moth's
Did you ever get rid of the snake under house? Hopefully you did - that sounded scary!