Individuals can prevent cockroaches from entering the home by sealing gaps around doors and windows, screening drain lines and sewer vents, keeping window screens in good repair and using essential oils around the home. Homeowners should also keep surroundings clean and store food in airtight containers.
Homeowners can reduce the number of access points into the home by sealing cracks in floorboards, on the walls, around the window sill and at utility line entrances using a caulking gun. Essential oils, such as peppermint and cypress oil, may be combined into a solution to repel cockroaches. An individual can mix 10 drops of peppermint oil and 8 drops of cypress oil with a half cup of water before spraying it into room corners and nooks where the insects may gather.
Cardboard boxes should be eliminated, as they serve as a breeding ground for cockroaches, and dishes should never be left in the sink overnight. Homeowners should keep cabinets, drawers and trash cans firmly shut, and all food residue should be cleaned immediately. Homeowners should also fix leaks and drips in the kitchen or bathroom, as cockroaches tend to nest near water sources. Vegetation, firewood and mulch should be kept at least one foot away from the house's walls.