I am leaving to go treat some fire ant mounds at a house that have 28 mounds on their acre of land.I have been working on the mounds since May 7. The first day i placed 28 traps out it rained 4 hrs. later,i mean a thunderstorm. I am so glad the bait poison was inside the trap and dry. the mounds in the yard were well established but i am winning. as of the 27th of May. i had 31 dead, and a total of 10 new mounds found.this person is handicapped with a 2yr old grandchild and could not take care of the yard so I was hired to control the fire ants in the yard. seeya later.