excellent product, just be careful of what you eat or you will turn into a water balloon. meaning you hold alot of h20 on the shit. but size and strength gains are awesome.good luck
if your not stacking and dont have access to a sterile solution, all you have to do is fill the syringe unscrew the needle and screw on a new needle of a different syringe. its just clogging up. simple solution change needles. only thing that sucks is you have to use 2 syringes every time.