I dislike spraying pesticides....they not only kill the ants, but beneficial insects as well. A borax, sugar & water 'syrup' is a very effective 'poison' for ants.
My solution was to build a container for the "ant syrup" that would allow easy access for ants, but not for birds, animals and other insects that might find that sweet syrup appealing......and its pretty secure from curious kids. I wanted something that could be used outside & withstand the elements....and the design to be such that evaporation wouldn't pose a problem (I wanted the syrup to stay syrupy)! And I wanted it to hold enough syrup that I wouldn't have to frequently refill it.
I wanted to set it in place & forget about it! This WORKED for 9 months on one filling.
2 cans, one slightly shorter & smaller diameter than the other
foil duct tape
a kitchen 'scrubbie' (Scotch-brite pad type)
Borax (found in the laundry detergent aisle)
can opener (the type that 'removes' the lid, rather than the kind that cuts into the lid)
large nail & hammer (to make access holes for the ants)...... or a drill & drill bit
scissors (to cut the 'scrubbie pad')
Step 1: "Remove" the Lid
At the end of this process, the lid will be reattached.
Step 2: Scrubbie in Place
Add the 'syrup'......I used equal amounts of borax and sugar, added enough water to make a syrup. You can fill the inner can to nearly the top, just be careful to keep the can upright.
Secure the inner can to the center of the lid of the outer can....hot glue gun, double faced tape, strong adhesive, bits of the foil tape....all will work.
Slide the outer can in place!
And press down firmly to seat the lid back into place.
Step 4: Taping It Securely Closed!
If any of the holes get covered by the tape, be sure to poke a hole in the tape where it covered the holes.
Step 5: Done!
You can paint the outer can....to keep it from rusting away (this can spent 9 months in exposed to the elements), or make it blend in to the surroundings....or to make it more noticeable.
Borax & sugar syrup to keep ants from invading is nothing new. It WORKS! But I like having it in a container that limits accessibility to other creatures.
This works wonderfully with fire ant infestations.....and they are more than just a 'nuisance'.