I noticed that you also posted you planted onions there. I would dig one up in a week and see what you have. If the bugs are still there I wouldn't plant anything there until late summer. Until then cover the ground with black plastic and let it cook in the sun all summer.
Ok, thanks. I’ve done that before to kill weeds off, but never for bugs.
Mostly agree with you .
Till up and loosen the soil( even in raised bed) , then put plastic over it to sterilize the soil.
The reason why I suggest some tillage is to get the heat down deeper into the soil, until the soil temp registers either 160 degrees, or at least 140+ degrees for 5 days.