Do you know this insect?

Around my windown and the heat register under it there are a bunch of bugs that I have found. They are about 1-2 inches oval shape, 6 legs, 2 antenna's, wings, black with orange line on each side. They normal are around when it is warm inside my apartment or outside. I live in Mi so it is starting to get cold but in my apartment it gets pretty warm. (I think my heater is messed up) My screen on my window there is a little gap where they could fly in so I figured that was how they get in but today I had the window closed all that and I noticed a bunch on the register. I kill atleast 5-10 a day. I have one where I can send a pic if I need to but I want to know how to get rid of them. I live in a apartment so I told the manager but she left for the day and sometimes it seems to take a few days to get things done. If anyone can help it would be nice. Thanks.