Self-__ Litter Box, No Poop Scooping Required

This page is the CodyCross answer for the clue below from Brazilian Tour, Group 772, Puzzle 1 (Cachaça and Guarana).

Question is: Self-__ Litter Box, No Poop Scooping Required

and the answer is: CLEANING

Word Meaning:

CLEANING — The process of making something clean; a freeing from filth or dirt.

Definitions from Wiktionary.

Self-__ litter box, no poop scooping required — CodyCross Answer | CodyCross Solutions