Can you mix BT and Copper?

[hasshoes]

I'll be darned if my few remaining plants are taken out by critters! Kill them all I say. . . I haven't had one mater yet, gosh darnit!

So I've read the label on the copper and it's very confusing about mixing. . . I'm sure I can figure it out if I spend like four hours on google . . . but I thought I'd ask here first.

Also. . . If I spray separately how long do I need to wait? Can I just wait for the copper or BT to dry then spray the other!!!

Thanks in advance!!!