The Extractor Pump ® Vacuum was designed specifically to provide the most powerful suction available for the safe extraction of venoms and poisons. Because its Double Chamber Pump action is so powerful you will not need to use the dangerous scalpel blades or knives associated with less effective bite kits. Because it's a Pump and not a Syringe, it's easy to use with one hand. Simply select which of the four plastic cups best covers the bitten area, attach it to the pump, then a simple push of the plunger with your thumb and the Extractor Pump ® will quickly and effectively remove venoms and poisons from below your skin. By simply cleaning the cups after each use you may safely reuse the pump over and over again.