The best ant poison is now available for outdoor use to kill ants before they get into your house.   I have a large house which is inundated by ants every year at four different points in the house.  I’ve been using Terro liquid ant bait which works great except that it attracts ants in the house.

Terro ant poison takes a few days to kill the ants because it is designed to have just enough poison so that the ants can take it back to the Queen and kill the colony.  If you kill the ants too fast, the Queen will continue to breed thousands of more ants.

The key to using Terro liquid ant poison is to find where the ants are coming into the house and to put the poison at that spot.  It keeps the ants from going all over the house, but you will see hundreds of ants concentrated in one spot at the poison for a few days.

Now, Terro makes an outdoor liquid ant poison.  It is the same liquid ant poison for indoor use, but with a container suitable for outdoor use.  I just used it and it works great.  Within one day, there were no more ants in my house and I no longer care how long it takes to kill the Queen.

I purchased “Terro Liquid Ant Baits Outdoor” at Lowes, but you can also purchase it online at Terro.com