She’s independent, fairly low maintenance, and an endless source of entertainment. Litter-Robot 4, £749 However, all good things have a downside, and with her, it’s scooping her poop.

If you want to help tidy up your local area, why not get some top tips from the UK’s young litter picking heroes doing their bit? 11-year-old Elizabeth lives on the Wirral, in Merseyside and ...