Top 6 Best Insecticides For Japanese Beetles (2021 Review)

Demand CS is our number one pick, but why choose this out of all of the other products out there? Here are the points that sold us on this product.

The first fact that makes Demand CS stand out to me is that it is cleared for use in food handling establishments. This means that this product is safe enough to be used in an environment where people are preparing food for consumption.

While all necessary precautions should always be taken, this means Demand CS is safer than other options out there.

Next up is how Demand CS has a quick knock-down effect of taking care of your immediate problem, but also has residual effects that will stick around for 90 days to take care of any stragglers or late bloomers.

The last thing that is impressive to me is that Demand CS has no noticeable odor and doesn’t stain. This means if you are having problems inside or outside, you can use this to take care of whatever issues are bothering you and your family or business.

Japanese Beetles can be tricky to start with because they start out as another problem. Most likely, if you see brown spots in your yard, that is the work of the Japanese Beetle larva, and treating those areas can get a head start on your problem.

Demand CS can also treat your plants directly if you are having issues with the beetle once it has transformed into its flying beetle phase of life.

Each bottle will make 10 to 20 gallons of product. This is great for your pocket as a little bit goes a long way, and the average homeowner will most likely use less than half a bottle a year.

It can be safely applied directly to the yard where the larva is growing in order to kill them directly or as a surface spray to kill the adults, making this one of the more versatile products for dealing with Japanese Beetles.

This product is OMRI (Organic Materials Review Institute) listed for organic farming. It is 100% cold-pressed Neem oil from Neem trees, the only ingredient in the bottle.

It can be used on fruits and vegetables right up to the day of harvest.

For soil drench treatments, mix one ounce of Neem oil with one gallon of water, so this 16-oz bottle will make 16 gallons of the finished product.

It’s very effective, especially against adult Japanese Beetles, but only for a few days. Then it has to be reapplied.

Because it is an oily extract, it may begin to solidify below 70ºF. If that happens, submerge the bottle in warm water for ten minutes then shake vigorously. For best results, mix it with warm water for making applications.

If you are lucky enough to catch the signs that you are going to have a Japanese Beetle problem before the larva are able to leave their home in the ground, you can get ahead of the battle and possibly put an end to it before it ever becomes the headache that we all know it can become.

Japanese Beetles lay eggs in the ground that hatch and turn into a larva that then eats the grassroots around them and cause ugly brown spots to appear in an otherwise perfect lawn.

Merit Granules use Imidacloprid at .5% and come in a 30-pound bag. 1.4 pounds of these granules are capable of treating 1,000 square feet. For the average person, that means 3 to 6 pounds of this product will treat their yard every year and leave plenty left over for next year.

Granules work by using a spreader to evenly distribute them over an area, and then as it rains or gets wet by other means, the product is released and absorbed into the ground where it will kill lawn pests like the Japanese beetle.

Of course, you can sprinkle some directly onto a brown patch and call it a day, but to fully protect your yard, you will need some sort of granule or seed spreader to get a nice even coat to properly treat a larger area.

Where this product is less efficient than a liquid spray is that it doesn’t have any indoor applications. In addition to being outdoor only, and needing a spreader to use it effectively, it also isn’t usable near or on any kind of plant that is meant for food production purposes.