do aphids harm the garters?

[guidofatherof5]

Chemicals are chemical. Most should be avoided. I would guard against any contact with your garter snakes. Especially smaller ones.
Many times these chemicals are dangerous in their concentrations.
I believe some baby snakes are being killed by fresh/frozen fish purchased because they are treated with some chemical. In a larger animals it's not lethal but in a tiny baby it is.
Please be careful.

[Stefan-A]

Chemicals are chemical. Most should be avoided.

Especially dihydrogen monoxide, which is in practically everything we eat and drink.

Dihydrogen Monoxide Research Division - dihydrogen monoxide info