Ha, yea this came out that those kits were worthless a few years ago. I still carry it in my car kit. I think cutting would also help, you just have to do it right. Also, really hot water soaking might help lessen the anti-protein elements in the venom, but I can't confirm it. Luckily I learned never to trust the MSMedia, so I always carry the kit and have given it a test run also. Now I need to include a tourniquet of some type in the kit. Or 2. I'll be going down south in rattlesnake country this summer.
Seems like a saline flush would be a good option also, just keep flushing the wound out a bottom hole, until most of the venom is gone.