Trash Cleaner needs workers to dig, and you can't sweep a site by hand while a cleaner stands on it. so click one cleaner and press DEMOLISH twice (it's free), then sweep that site until you have 1.5 CI. buy Volunteers in the Machine Tree (bottom left), wire Volunteer > Cleaner > Landfill and hit BURN. after that it's Market (5 CI), then Recycling (16 CI) for the Recycler