They are some form of a black beetle....nasty little things.....so for plants that are not edible use Sevin. follow the direction on the container. Use gloves, old long clothes, mask and goggles. You might need to repeat this. Look on the container and see if you can spray it on your grass. I don't like to use this on food products. I use soapy water on vegetables. This is the first year that I ever saw these bugs. It has been so very hot up here in NE PA...