How to Get Rid of Ants Overnight: An Evening Routine

The best thing to get rid of ants overnight is an evening routine: wipe every trail with soapy water, seal food and the entry crack, take out the trash, and set a bait station by the entry before bed. By morning the visible ants are gone; the bait keeps working on the colony over the next week, so the trail does not come back.

What You Can and Cannot Do Overnight

You can clear the ants you see in one evening. Soapy water kills the ants it soaks and wipes away the scent trail that guides the rest, and with food sealed away, there is nothing to bring a new line back by morning.

What you cannot do overnight is kill the colony. Workers on your counter are a small share of a nest that usually lives outdoors or in a wall, and the only common tool that reaches it is slow-acting bait. UC IPM's ant pest notes say baits can take 5 to 10 days to show fewer ants, because they have to act slowly enough for workers to carry them home.

So the overnight plan does both: a clean kitchen tonight, and a bait that starts on the colony while you sleep. For the full plan beyond the first night, see our guide on how to get rid of ants.

The Evening Routine Step by Step

1. Find the trail and the entry. Follow the line of ants back to the crack, window frame or pipe gap where it comes in.
2. Set the bait first. Put a bait station on the trail close to the entry before you clean, so ants already heading home find it.
3. Wipe the rest of the trail. Sponge it with soapy water from the food back toward the bait, leaving a foot or so around the station untouched.
4. Remove the target. Clean up whatever drew them, often a spill, a sticky jar or crumbs, and put sweets and pet food in sealed containers.
5. Empty the trash. Take food waste and recycling outside and wipe the bin.
6. Seal gaps away from the bait. Caulk or plug with petroleum jelly any other cracks ants use, but leave the one by the bait open for now.
7. Dry the sink. Wipe the sink and counters dry, and fix any dripping tap, since ants come for water too.

In the morning, check the bait. Ants feeding on it is what you want; leave them alone. Seal the last entry once the trail has stopped for a few days.

What Are the Tiny Brown Ants in My Kitchen?

Small brown ants in a kitchen are usually Argentine ants, odorous house ants or Pharaoh ants. UC IPM describes Argentine ants as about 1/8 inch and dull brown, odorous house ants as similar in size with a strong smell when crushed, and Pharaoh ants as tiny, yellow to honey-colored ants that nest inside walls and cabinets.

The difference matters for the bait. Argentine and odorous house ants take sweet baits, while Pharaoh ants prefer protein or grease, so if a sweet bait sits untouched by morning, try a protein one the next evening. Crushing one ant and sniffing is a quick check: a strong, rotten-coconut-like smell points to odorous house ants.

What to Do if You Find Ants in Your Bed

Ants in a bed are almost always following food: crumbs from snacks, a drink on the nightstand, or a pet's food nearby. Strip and wash the bedding, vacuum the mattress, bed frame and floor around the bed, and wipe the trail with soapy water back to where it enters, often a window or baseboard.

Keep food out of the bedroom for a while, and set bait at the entry point, not on or next to the bed. If the ants are large and black and you see fine sawdust-like debris near wood, check for carpenter ants nesting in damp wood nearby.

Overnight Home Remedies That Help

Soapy water is the most useful home remedy for a fast cleanup, and UC IPM notes some soap products such as window cleaner kill ants on contact without leaving residues. Vacuuming a trail works just as well for removing the ants you see.

Vinegar, cinnamon, coffee grounds and essential oils are popular overnight tricks, but there is no reliable evidence they keep ants away once dry, and plant oils have limited lasting effect even in commercial sprays. Homemade borax and sugar baits work on the same principle as store baits but must be kept away from children and pets; the getting rid of ants section links the homemade methods.

Will Ants Go Away on Their Own?

Sometimes, for a while. When the food runs out or the weather changes, foragers may stop coming in, but the colony is still nearby, and the next spill or the next season brings them back along the same route. Ants rarely leave for good unless the entry is sealed and the colony is reduced with bait.

That is why the overnight routine ends with sealing and leaves the bait in place for a week or two. If ants keep returning after a month of baiting, a professional who uses baits rather than sprays can find the nest. Indoors-nesting Pharaoh ants in particular are hard to clear without knowing where the nest is.

Common Questions About Getting Rid of Ants Overnight

Key Takeaways

One evening is enough to clear the ants you can see: set a bait station by the entry, wipe the rest of the trail with soapy water, seal food away, take out the trash and dry the sink. The bait then works on the colony over the next 5 to 10 days, which is what stops the trail from returning.

Match the bait to the ant if it goes untouched, keep baits out of reach of children and pets, and seal the last entry once the trail has stopped for a few days.

Tonight, set the bait by the entry first, then clean the rest of the trail.