Artificial grass requires a lot less maintenance but that doesn't mean you should neglect your fake grass. A little light maintenance once every month will go a long way and save you more time and trouble. Extending its lifespan. 1) Brush the grass regularly in the opposite direction. 2) Regularly remove leaves and debris using a leaf blower, stiff brush or plastic rake. 3) Use artificial grass cleaning spray straight after any spillages, pet poo or pee. Then water the area and your grass will be completely clean.