Screening your compost is a good idea. You will be able to filter out many larger items that have yet to break down which you can easily toss back onto your compost pile.
If you keep a vermicompost bin like I do, then screening is also a great
way to make sure your worms do not end up in your garden.
Worms in your garden are not a bad thing, but you want to keep your worms doing their jobs in your vermicompost bin.
Here are the Step by Step instructions