Use Lemons to Keep Insects Out of Kitchen
For ants, squirt lemon juice on door thresholds and windowsills, squeeze lemon juice into any holes that ants are getting in, and scatter lemon peel around the outdoor entrance.
For roaches and fleas, mix juice of 4 lemons along with rinds with 1/2 gallon of water and then wash the floor with it. Fleas and roaches hate the smell.
ReferencesErnest, D. (Ed.). (2005). Extraordinary Uses for Ordinary Things. Pleasantville, NY: The Reader's Digest Association, Inc.