After about an 8 year hiatus, the ants have returned to my 5th floor condo kitchen. When I first moved here, I had two separate invasions of the little (picnic) ants which required an exterminator to get rid of completely. Since then, I have been ant-free for about 8 years. Today I was visited again. Have attempted to do battle myself with Raid, and will see how that goes. So far, they are not as numerous as the previous 2 invasions. Ug. At least they are not carpenter ants.