I find lots of these under a barrel previous owner left on wood deck of home recently purchased. They flea like cockroaches as soon as I lift up the barrel and go through gaps in deck back under the deck. Deck is only elevated a few inches off ground. Is this a cockroach? We see no evidence of cockroaches inside, but if these are cockroaches- I want to get this addressed ASAP. I left my grill cover on the deck floor last night and a bunch of them were under it when I picked it up this morning as well. Seem to like dark, wet locations.