Pippi Fix binds urine within minutes. It binds the odor and the liquid. It is given just before urinating into the container. When the urine comes into contact with the bonding pack, this refers to the urine. The powder contained inside it swells so much that the resulting Gel can burst the outer shell. So all the urine is bound to a crumbly gel and can be disposed of through the ECO-finisher macerator.