I have had ants, but not any more.  I put a line of boric acid at the back of my kitchen shelves and that took care of the problem. (June, 2007)

Ants are attracted to water. Check all pipes if there is no leak in the suite perhaps the ants are just their place as a road way to the water supply in someone else suite. Trying to discourage ants from invading the home can be frustrating. Proper food storage and waste management will reduce the food that often attracts workers indoors. Clean all kitchen surfaces, vacuum daily, and rinse recyclable containers before storage. Ant trails can be temporarily disrupted with a mild solution of vinegar and water. Sticky barriers using commercially available materials, such as Tanglefoot or Stickem, or water moats containing soapy water, can be used to prevent ants from reaching plants or other items. Caulk cracks that ants are using to enter the home. (June, 2007)

For the ant problem, we have bought some Grant's Ant Killer (can be purchased at target or grocery store) and have placed them around outside and inside (keep out of reach of pets tho!)- we are still waiting on results. Other than that - constant cleaning seems to help out as well - that way their trails are wiped clean to keep others away - or so it seems (so far)! (June, 2007)

Try tea tree oil (June, 2007)

Every year we face the ant problem.  I have noticed it happens either after a heavy rain, or a heat wave.  I have always wondered why the association does not provide perimeter spraying for the buildings.  My experience is that no matter how much you spray in your unit, if the grounds surrounding the property re not treated it is a losing battle. (June, 2007)

"Grants Ant Stakes" usually control the problem within 10 days. Just place the devices in strategic locations close to the ants and "forgetaboutit" They are available at ACE down on Cutting. (June, 2007)

I live in a third floor end unit (1301), and yes, I've had an annual ant invasion for the last three years, even with keeping all food stored, counters clean, etc. This year I've had the best success controlling the ant invasion. In past years I've tried the various ant control formulas which the ants are supposed to consume, take to the nest, and over the course of a few days, the nest is supposed to die. However, I've had only limited success, as the ants have never taken enough of any of the formulas to completely kill the nest. This year I tried using two different formulas, placed of course at entry points, and mashed the formula with maple syrup. Well, it took about a week to take full effect and in the short run the ant invasion actually increased as the ants really swarmed their maple syrup cocktail. Now, for about three weeks running, I've had no ant invasion of significance. Hope this helps! (June, 2007)