Thousands of snake keepers have successfully used PAM, and most of us are still upright. Use the product in strict accordance with the directions and you will be fine.

As a slightly related side note, the US Armed Forces has issued cans of clothing treatment that uses the same active ingredient in PAM for years. Military members treat their uniforms with it prior to a deployment in order to repel pests. Again, thousands of us used the product on not only our uniforms, but our tents, cots, sleeping bags, and pretty much everything else we took with us. I've never heard of one problem from using the product.