I have used up the first container of the 2 that I bought,what looks to be happening is that when applied to a mound the entire mound isn't dying, it just moves over near by and creates another mound! apparently this product is not working.
Sprinkled this on several different trails of argentine ants, and in every case the ants ignored it. Then I placed a piece of ham on the trail to test if they were hungry, and they devoured it. I found this to be useless for ant control