If you hate Japanese Beetles munching on your garden plants and you hate using toxic, hazardous pesticides, these are the remedies for you. A Japanese Beetle infestation will do a lot of damage to your garden. Besides the Japanese Beetles eating your plants and making them look bad, Japanese Beetles can kill your plants with their incessant chewing.
Things You Will Need
Wheat Bran, Cedar, Epsom Salts
Spread wheat bran around your garden. Mix wheat bran with plain water so the wheat bran is fairly moist and sprinkle it between your plants and around your entire garden and yard. The Japanese Beetles will eat the wheat bran, which continues to expand once inside of them in turn causing them to literally burst. Wheat bran is available at health food stores and grocery stores.
Use cedar spray. Place pieces of cedar wood in a bucket and add approximately a gallon of boiling water. Allow the cedar to soak in the bucket overnight. Pour the water into a spray bottle and spray around your garden and on the plants once or twice per week. Reapply after a rainfall. You can also use cedar intended for bedding for small pets such as hamsters or gerbils.
Spray your plant and garden with Epsom salts. Dissolve 1 tablespoon of Epsom salts in about 1/2 of a gallon of water. Reapply every 2 to 3 weeks.
All 3 are very effective methods to eliminate Japanese Beetles. These methods do need to be repeated especially after a rainfall. These methods are safer than commercial pesticides and work equally as well. They are also much less expensive.