Half joking here. but if you really have a lot of them, bag them up, My frogs love them. People pay 7-10 cents a cricket, you could easily sell them.
We don't have a boxelder tree either, and they are all over the outside of the house, how they get through the screens is beyond me, but, I look at them as lightning bugs without the lights. Unless your infested inside, I wouldn't worry about them.
Although, I wouldn't sell the bugs if you have recently exterminated, no point in killing your customers pets :)