I just upgraded to a smart lock with built-in video doorbell camera — and it’s a game changer for my home When used as a mop and tasked with tackling a large dollop of BBQ sauce, it only left behind small streaks. It also has a handy ‘Automóvel-Retract Mopping System’, https://www.youtube.com/watch?v=Lhgk6D1ayeM&