I have two chihuahuas that stay in my kitchen all day while my husband and I are at school and work. Their food is on the floor and we have been constantly having to change out the dog food due to the ants keep invading our home. 
Most of you might tell me to pick up the dog food before I leave for work, but my doggies eat only little bits at a time and I don’t want to take that luxury away from them. Silly, I know, but I am wondering if there is a safe and alternative way to get rid of ants without having to change the pattern of how and when they are fed.
So after doing some research i found on www.ehow.com I learned that the tiny invaders in my home, often known as sugar ants are just the run of the mill household ants that tend to leap out between the months of march through September. They are often known as sugar ants due to their interest in food particularly sweet tasting.
first tip is to do a deep cleaning. Use white vinegar (not cider vinegar) to wipe down the counter tops and other mess. clean the sink completely and even try running some vinegar down the drain to get the smell of food out of the kitchen. Make sure to clean the garbage can and other areas on the floor. Looks like the feeding time for the puppies is going to change after all.