Question: we have ants they come up out of the sink only if something besides water is poured down the drain. how to stop this? also we have them coming out from the plug-ins. does that mean they are in the wall?

ANSWER You may have an infestation of Pharaoh ants.

Pharaoh ants are a common household pest and difficult to control. They infest the entire house, they seem to feed at all times of the day and night, and standard spray treatments are not effective or even advisable.

The best control strategy is to use baits and be patient. The baits take time and there are likely many small colonies throughout the house. The baits will have to be located in many places and the ants will have to be attracted to the baits. The use of liquid baits is best, and you may want to try several different brands.

Baits are the best control strategy for these ants. In fact if you spray chemicals for them you may only make the situation worse. Spraying liquid insecticides usually fragments the colonies and makes more of them! There are some commercial ant baits available for these and other indoor ants.

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