One way to do this is to ask them to bring their leaves, grass clippings and kitchen waste out to the farm regularly and add them to the compost pile.
(One way to do this; is; to ask them to bring their leaves, grass clippings and kitchen waste out to the farm regularly and add them to the compost pile) (them; to bring regularly; their leaves, grass clippings and kitchen waste; to the farm) (them; to add; them; to the compost pile)
One way to do this them them
is to bring regularly to add
to ask them to bring their leaves, grass clippings and kitchen waste out to the farm regularly and add them to the compost pile
their leaves, grass clippings and kitchen waste to the farm
them to the compost pile