The user guide that came with my Redmon bin states that you can compost “fruit and vegetable peels/rinds, tea bags, coffee grounds, and eggshells,” plus yard waste like grass clippings, leaves, and straw. (I actually throw in all parts of a fruit or vegetable, not just peels and rinds, and I also put in paper products like coffee filters, brown paper bags, toilet-paper tubes, and paper napkins.)
