For nastys I have used the Prochem Oxy booster with Grand Slam as well as Judson Juice O2 with the hot sauce added. I assume these two products are similar in nature. Both products say on the label to use them within 1/2 hr after mixing. After 1/2 hour, is the effectiveness of the booster just depleated and the prespray still has its kick? Or does the expired booster ruin the whole batch of prespray after its post mix time has expired?
The effectiveness of the booster will dimish with time. The prespray is still good. You can use it as is or add more booster. BTW - Try Bridgepoint's Boost All for a great oxygen booster.