HOW to kill ants,in house , barn ,?

Ants would be a common spectracide. a href="http://www.bayeradvanced.com/insects-pests/products/fire-ant-killer-dust" rel="nofollow"http://www.bayeradvanced.com/insects-pes…/a You may need to add water after putting the spectracide on the mound, but it will kill the mound in a couple of hours to a day. As for animals, you may want to look into a .22 rifle, not much more needed than that for smaller pests.