Just curious, what is the down side with suction devices if applied properly within seconds of the bit?
Are they just not worth the hassle even if a small amount of venom is removed?
Thanks
Dr William Forgey is one the leading experts in outdoor wilderness medicine. He was an adjunct professor at Western Illinois University when I was a Recreation student there. I don't know what Dr. Forgey or other experts recommend now, but back in the day he said if you're going to carry a suction device, get one of these:

Never used one on a snakebite, but they seem to minimize the reaction from mosquito bites if used right away.
The little squeeze-suction devices that were popular in the '70s are worthless.