Any idea what kind of bug this is?

Roach Proof works. Its boric acid with a sex lure added. You'll have to put some time and effort into its application though. Every nook and cranny. We had a major roach problem in our first 12 X 65 mobile home. The can of roach prrof said covered a 9 room house. I used every bit in the mobile home. I used a spoon and a straw and a bulb siringe and even drilled a few small holes to get it in their hiding places like beneath the kitchen cabinets. They like warth and water. They'll get in TVs, computers, everywhere. I took a service panel off the range and the fridge and the dryer. 7 years past and still no roaches. So, when we built this house I came in the day before the drywall hangers arrived and despensed 2 cans of Roach Proof inside the walls.
Here we are 21 years later and still have never seen more than a single roach once in a while and those were dying or dead.