Those are Harlequin bugs. I squished at least 500 of them this year. Maybe closer to 1,000.
Spinosad and then hand pick em.
I would trap em on the big fan leaves and squeeze. Leave the carcass on the leaf. Hopefully the carcass would disease all the others.
Found a wild broccoli plant at each end of my yard that was attracting them. Pulled em and I haven't seen many harlequins since.
ah thats why they are. i guess you are both right because the harlequin is a stink bug. but now i know the specifics, appreciate it! well what do you guys recommend? i had been using neem oil since they were small but when they got big it because time consuming. i think that would help only with the possible eggs. im gonna have to check out spinosad too!