Roaches are repelled by catnip, and so putting catnip around the house assists in repelling the ugly critters. The catnip herb is a natural repellent for cockroaches. If you have a cat, use bay leaves in lieu of catnip, as bay leaves repel as well. Catnip also keeps the cockroaches from returning after they leave because they hate the smell. This method should NOT be used if you have cats in the house. You will have a psychotic couple of weeks with your pet. 5. These plants, though loved by plants harm roaches and other insects. Ammonia works effectively as a repellent for roaches due to its sharp smell. Not only does it produce beautiful flowers, this is also a proven natural repellent for ants, bugs, mites, insects, other pests and roaches. Nepeta cataria 'catnip' is another herb that roaches find repulsive or repelling, explains the Iowa State University; so, unless you have a feline occupant that might experience a sensory overload from bowls of leaves placed throughout the home, give it a try -- catnip oil makes an effective mosquito repellent, reports the university. 2. Catnip – It also works as natural repellent to roaches. Having an indoor garden will be a great idea as you can bring these plants closer to tackle your pest issues. Chrysanthemum. Catnip Catnip Plants – Source Catnip is generally known as the plants that our feline pets love to have around.. What you do not know that catnips are excellent at repelling roaches and numerous other bugs like ants, flea beetles, weevils, and more.. All you need to do is grow loads of catnip all around your house. You may want to use a repellent when you’re filling in holes and cracks so that you can keep roaches from entering a space that has been properly exterminated. Catnip ; Catnip plants are also known to be effective in repelling roaches. In fact it kills cockroaches. Research studies conducted at Iowa State University have confirmed that placing catnip around the house repels cockroaches. It is known to be very effective against cockroaches. Catnip. Catnip contains the chemical “nepetalactone,” which cockroaches are sensitive to. Garlic Well a study by Iowa State University has concluded that the essential oils in catnip is more effective at repelling roaches than DEET (a commonly used insect repellent) is! Although lethal to roaches, this plant will not harm pets or children. Clovite is a vitamin supplement used for horses. Does Boric Acid Actually Kill Roaches? And if you are struggling to deal with cockroaches then use some of these techniques and I am sure you will be able to repel cockroaches to a good extent. Catnip is not only one of the most effective deterrents against roaches in the plant kingdom, it's one of the best roach repellents available across the board. Roaches will leave your home in no time using this method. Simmer 1 tablespoon of catnip leaves in 2 cups of water and strain it. Catnip spray: This is a type of herb that belongs from the mint family, and can be used to curb cockroaches out of the house. 1. Shop for Catnip plant. Clovite. 7. Reason being? 1. The herb can therefore prevent a roach infestation. How it Works; Catnip plants contain a chemical compound known as nepetalactone. Once again all you need to do is place a few leaves around the house in the obvious places and this wonderful herb will keep roaches away. How to use Catnip: Catnip | While cats love the smell of catnip and it’s non-toxic to humans and animal, the same cannot be said for roaches. The nepetalactone in catnip exhibits repellency property and it is also nontoxic to pets and humans. 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