We were in a campground in mid coastal FL for 5 weeks, every campsite had tiny ant nests. The dried catfood was a major problem, if we left dried kibbles out for the cat for 4 hours while we were gone the sugar ants would cover her food. Boric acid sugar traps did not work, the ants wanted cat kibbles. A worker at tbe campground suggested spraying every crack with WD40. That worked about 5-7 days, then we would have to reapply. We had some chinese chalk we had bought in Cartagena, Colombia but that did not stop the ants. Who knows what was in the chalk, it was effective in humid south american locations but not FL.