Keep rocks from lawnmower from break windows on house -shutters too $

If they're too small for you to pick them all up, you may need to rake them up, before you mow. These rocks will damage not only your shutters, but the lawnmower. If that's not possible, mow high. Set the blades high to avoid hitting shallow ledge outcroppings that you simply cannot remove.

I agree with Alice. Raking would probably be your best bet. Where are the rocks coming from? A flower bed, walkway, driveway? You may need more effective edging to keep the pebbles off the grass. Our lawn was rough when we first bought our house, and if it wasn't a pebble, it was a small stick. So I bought a lawn mower with a bag that caught the debris if I didn't see it.

If they are traveling from a garden where you have stones down, make sure that you have an edging higher than the rocks so that they don't travel out of the garden. If you have kids or grandkids, or even neighborhood kids around, see if they will help you pick them up. Offer them a few cents a rock and give them each a grocery bag to put them in and watch them go.

All rocks should be removed before mowing. Find the source of the rocks and fix that.

Mow in the direction where the rocks are thrown away from the house, or put a bag on the mower. You may want to spend some time picking rocks up and put them in a pile somewhere you can use them in the future.