It's summer and many of us are mowing our lawns. Grass clippings are a byproduct and some people don't know what to do with them.
If your lawn isn't too overgrown consider not using the grass catcher and let the mulched grass clippings feed your lawn. Grass composts very quickly and it can leave behind great nutrients for your lawn, and also save the need to fertilize.
When the clippings are too long leaving them on your lawn can be bad for the lawn. Piles of clipping can block the living grass from sunlight and actually kill your living grass. In this case it would be good to catch the clippings and put them into a compost pile. I usually throw a couple scoops of dirt on top of the clippings and this helps them compost even quicker. The compost works great in flower and vegetable gardens!