You can create an effective bug repellent by taking a cup of water, adding twenty drops of citronella oil, twelve drops of lavender oil, two drops of peppermint oil, and eight drops of eucalyptus oil. Use this in a spray bottle as you would with any other commercial bug repellent. If you want to get rid of ants and other intrusive insects you can spray vinegar in corner and cracked areas of the home, especially the kitchen and bathroom areas.