if you did have worms, they would be eaten by the chickens and the pesticide would kill them as well

best thing I have found for killing ants is dawn dish soap (works for any ant/wasp). Mix a half cup with 5 gallons of water and pour on top of mound. You may have to do it again in order to get it all the way into the mound, but it will kill every one it touches. Great wasp killer too. Put in pump up sprayer and spray the nest, they will drop like flies very eco friendly too