We have had tiny, tiny ants here in FL this year. Terro does the job
better than anything else I tried but it won't keep from year to year.
Buy new Terro and when the summer is over, throw it away and buy fresh
next year. The ants will be back. I got a large bottle of spray at
Home Depot and sprayed outside the house....helps cut down on various
insects.

The tiny ants come in the kitchen and bath. I have been careful to
keep things clean and have no idea how they got in. I recaulked all
the windows and the tile in the bathroom.....and when it starts raining
outside they all come running in.