The hum/buzzing that hubby heard on porch of old house behind us was bumble bees. First thought they were in the wall. Then under the wooden floor. It has a rock foundation. There is a gap in the rocks so he put 3 bug bomb canisters under there. That didn't help. So he backed the truck up to porch to get the old rocking chair that was on there. Wanted to put it on our back porch. It is a stuffed rocker. Not very good but ok for porch. Got it on truck and saw him take off running and waving hat. Bumbles attacked him and truck. They were in the chair. He hauled it up to other house by old chicken house and dumped it out. Didn't get stung. This evening sprayed the ones left on the porch and sprayed the chair. Kept buzzing in chair. They were up under the arm. Ended up pouring gas on it. That fixed them. Don't want a bumble nest around. Oh Saturday caught 27 crappie at local lake. Sunday hubby caught 7 lb blue cat and I caught a gar and shovelnose sturgeon.