Carpenter Ants - Knowledgebase Question

Maplewood, Mi
Question by kevicampbell
June 30, 2010
How do I control/get rid of carpenter ants on my lawn?

Answer from NGA
June 30, 2010


There are a few baits available for carpenter ant control. Most retail products are liquid or granular formulations containing hydramethylnon, sulfluramid, abamectin, or boric acid. An inexpensive liquid bait of 1% boric acid in a 10% sugar water solution can be mixed at home, but it is very slow acting and must be constantly replenished. Baits vary a great deal in their effectiveness. Carpenter ants have complex food preferences, and some of the sugar-based baits will not be attractive to the ants long enough to be successful.

The keys to successful baiting are placement and monitoring; a bait cannot be effective if it is never encountered by ants. Place the bait only in areas where activity has been seen or is strongly suspected. After offering the bait, monitor it over 24 hours for feeding activity. Any bait that is ignored should be substituted with another, and any that is consumed should be replenished.

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