had a new patio door installed last week, during that time flies infiltrated, they have now grown to be giant flies. i have been slaying them for 2 days, i think there is only one left alive. it's bold and lands on my head! i hate flies, absolutely loathe them. think i have a couple of those sticky hanging traps, don't know if they'll do the job tho, only critter i ever captured with one of them was my Mom. LOL