Ants in search of food and water often find ready supplies in homes. Here are some tips from the makers of Combat pest-control products for keeping ants out of your house:

—Ants often enter via tiny cracks and holes in the walls, such as the gaps around utility lines and windows. Filling those openings with caulk will block their entrance.

—Keep vegetation about a foot away from the house, and avoid placing mulch close to the structure.

—Fix water leaks and insulate cold pipes and appliances on which condensation develops. Ants need water, and they'll enter your home to get it.

—Don't overwater houseplants. If the tray at the bottom of the plant fills up, empty it.

—Leave pet food out only at feeding time, and store it in airtight containers.