Long workouts

so iv doin some long exercise routines and been sweating real bad and my infusion set comin out any  ideas to keep it in  

Sweat is the ultimate enemy of your infusion site. I don't see why they try to sell you the solvent when you can just sweat the damn thing off. I've found that if I know that I'll be sweating a lot, say during rugby or crossfit, I'll take some athletic tape and put it on the edges of the adhesive part. It usually works. Sometimes you wear everything off, but it's always worth a try.