Home Care

Why Do Ants Invade Your Home During Summer?

They do the same during rainy months, too!

Photography: Shutterstock (main)

We’re in the middle of the hot and dry season in the Philippines, and guess what that means? Ants. Lots of them. It seems that these little critters suddenly appear on your kitchen wall when the weather becomes warmer, and while you may initially have a live-and-let-live attitude towards them, sometimes, they can get very annoying especially when they start crawling on and biting you.

The thing is, no amount of bug spray can effectively stop colonies from invading your home (they always find ways to come back in), as according to a Stanford study released in the American Midnland Naturalist, ant movement really depends on the weather.

While the study is mostly about Argentine ants, other varieties also have similar behavior—they retreat into your home during the height of the hot season as well as the rainy season. As The Conversation notes, “Ants usually come indoors in search for food or nesting habitat… You’ve probably noticed ants more commonly come indoors in summer—that’s largely because most insects are more active in warmer months.”


Ants tend to go above ground to build new nests and to find food during summer. When the rains begin, they seek dry shelter and avoid burrows to keep the colony from drowning. This is why no matter what you do, you can’t seem to get rid of ants during these months, and why, when the weather becomes colder, they suddenly disappear.

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Of course, this doesn’t mean that you can’t keep them at bay. Slater Young suggests a mixture of borax and sugar to lessen the ant population, but if you don’t want to disseminate the colony (ants are actually nature’s cleaners, if you think about it, and are part of important ecosystems), you can opt to apply scents that they’re adverse to in areas they frequent. Here are some that can help:

  • Cayenne pepper or cinnamon powder
  • Citrus repellant (make one from peels of oranges, lemons, or any available citrus fruit in your home) + mint
  • Peeled garlic cloves
  • Bay leaves

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Do you have any effective tips and tricks that help keep your home pristine? Share them with us! Send your step-by-step guides to [email protected] with the subject "How To's", and we may just feature them next!

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