A family returned home from a trip to find their house infested with ants. The author had previously experimented with homemade ant sprays that were safe for children. She found the most effective mixture was water, vinegar and dish soap, which kills ants without risk of harming children. The summary provides instructions for making this homemade ant killer using a spray bottle, 3/4 cup water, 1/4 cup vinegar and a squirt of dish soap.