Hello Sharon,

Management
Japanese beetles are attracted to plants that have been previously damaged, so it is important to control beetles early. The use of pheromone and bait traps is not recommended because this will attract more beetles from surrounding areas and result in greater damage to plants. Small numbers of Japanese beetle adults can be hand-picked. Contact insecticides may be applied as soon as adults are apparent. Note that many contact insecticides are harmful to bees, beneficial insects, and mites. And it is too hot to use an insecticide now - it will burn the leaves.

Do this for each plant with beetles! Go to the leaves with the damage and flick the beetles off into a pail of soapy water.

I know this is a long process; it is the only way you can safely get rid of the beetles

Here are some other references for controlling Japanese Beetles at the links below:

How to Control Japanese Beetles | Matthaei Botanical Gardens & Nichols Arboretum

Japanese beetle control for fruit orchards and vineyards - Fruit & Nuts

HomeownerJapaneseBeetle.pdf

Japanese Beetle – Wisconsin Horticulture

Japanese beetles in yards and gardens | UMN Extension

I hope this helps!