Dear Dr. Dirt: Every July I get cicada killer wasps in my yard. They dig up huge mounds of dirt in my grass, which is unsightly. Nothing seems to kill the wasps. They burrow back under ground in ...

Q: My zinnias are really being wiped out this year. I'm suspecting a bug. Sevin dust has helped somewhat. Some of the leaves have holes in them, and a few plants are turning brown and dying. I have ...

Two streams partially contained within a 2,400 acre area subjected to aerial spraying with insecticide Sevin showed 54.2 and 62.8% reductions in the standing crop of aquatic insects eight days after ...