The TERRO Ant Killer Liquid Bait Stations (6-Pack) provides multiple stations to place indoors or out to protect your home and property from ants. The liquid stations effectively kill all common household ants and come pre-filled for your convenience.
First let me note that the product description is wrong. This product (Model 309) is the same product as Model 300 except that it is a bonus pack which includes 9 bait stations rather than the 6 included in the Model 300 which sells for the same price.
I used this product on the common small black ant and placed the bait stations on both a patio and an enclosed porch. Within an hour, the bait stations were swarmed with ants. It takes a bit of time to erradicate the ants. Terro's web site says that it takes 1 or 2 days but at least in my case, perhaps because I may have had a large number of large nests, it took about 4 days to erradicate the ants. I tried a number of other products such as Hot Shot liquid ant bait that didn't work at all on the small black ants.