Good Morning Laura, 

Thank you for contacting the U of M Extension Service. 

Please click on the following link from the U of M Extension Yard and Garden website: 

https://extension.umn.edu/yard-and-garden-insects/japanese-beetles#curative-insecticides-1592863  This information is detailed, up to date, information on how to deal with the Japanese beetles.  As with any pesticide, read the label in detail. Which product you use is up to you. We are not familiar with each pesticide on the market.  The timing of the pesticide application is important, as stated in the information. 

This information states:

Bacillus thuringiensis galleriae (e.g. BeetleGone, BeetleJus), derived from soil bacteria, is moderately effective against Japanese beetle adults, giving one to two weeks of protection. This product is not toxic to bees and other beneficial insects. Bacillus thuringiensis galleriae is only available from online sources.

Good Luck!