If you salt the slug, does it kill the snake?

Several years after MIL killed most of them off, the garter snake population is coming back. I love garter snakes and think they're just the best thing since sliced bread for keeping rodent populations in check.

One moderately sized (teenage?) snake has camped by some of my potted plants on the porch because the slug population is on the rise. I just started salting the slugs tonight because there are just too many. George, the snake (we call all of our snakes George), ate a fairly large slug yesterday so I know he's good for a week or so but I was wondering if anyone knew what the effects of salted slugs on snake diets is just in case George eats a salted slug.