I started building a tree house in a walnut tree this weekend and noticed large black and red ants all over the tree…what do you recommend? I have some ant gel I bought from last time I was in town, although it was for use in the kitchen.
The CARPENTER ANT GEL wouldn’t be the best option for this kind of problem. It doesn’t do well outside since it’s vulnerable to both the heat of summer as well as non-target insects. Honey dew based baits don’t do well in extreme heat and they tend to attract many types of insects. Additionally, there is most likely several ant nests involved here so you need something that will handle multiple nests without you having to know where any of them reside.
For this type of problem, clearly the TERMIDOR listed in our CARPENTER ANT ARTICLE is best suited. I have used it successfully on several trees around my property and in each case it did the job nicely. Because of it’s slow action, you will be able to affect all the nests which have ants active on the surfaces you treat – even ant species other than carpenter ants. I recommend treating the tree trunk, tree limbs and as much of the tree house that is practical to treat. I might also consider treating around your house if this tree is in close proximity of it or any other important structure since carpenter ants typically forage great distances. Failure to have a good protective barrier in place will allow them to set up shop elsewhere if other active areas are ignored.
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