This invention consists of a base and container which together produce a more expedient and sanitary process for collecting and disposing waste accumulated in the holder/tray of a self cleaning litter box. This device utilizes waste being collected into any bag inserted into the container rather than the accrual of waste in the smaller and more costly holders. Increased capacity lowers frequency of disposal reducing unhealthy conditions present when pet waste exceeds the capacity of the litter box holder. This invention can be made to accommodate more than one size of an automatic self cleaning litter box. The base would be positioned underneath the litter box and the container for collecting waste located adjacent to the self cleaning rake so waste falling from the litter box rake would be guided into a bag positioned within the container which is shaped to substitute for the more expensive holder.