PrettyLitter is a non-clumping litter. The super dry silica gels absorb any moisture and odor, trapping it inside as the water in the urine evaporates out. The solid excrement is the only waste you need to scoop and dispose of. Just throw it away like you normally would and replace all of the litter every month.
Used litter or cat waste should always be disposed of into the trash, and never flushed down the toilet.