Page "Tapinoma melanocephalum" Paragraph 9

One laboratory evaluation in 1996 tested 1 % boric acid in a sucrose solution, against a few ant species including ghost ants.

With a three-day continuous exposure to boric acid, the number of ghost ant workers was reduced by 97 % and by the 8th week all ghost ant queens were eliminated.

Interestingly they found that with hydramethylon ( an active ingredient in a ready to use bait ) none of the ghost ant colonies was eliminated.