9/25/2019 – At 8 am they were all over the young squash plants so I sprayed them with Spinosed by Jacks Dead Bug Brew.
At 6 pm they were worse so sprayed them with Bug-b-Gone that is an instant knockdown whereas Spinosed takes 24-48 hours to work. Although, it had been applied twice in powder form and once as a spray.
9/27/2019 – Still no sign of the beetles other than the dead ones from the Bug-b-Gone.
Maybe the instant knockdown of the Bug-b-gone and the lasting effect of the Spinosed will make a good combo.