A housemate who was quite secluded and a bit of a loner has just moved out and left a plastic tub in the cupboard which my friend when we was cleaning the room unfortunately found when she opened it and hundreds came rcrawling and flying out, she screamed, has left the house and refuses to come back and i have sealed the door with duct tape but will be too scared to sleep, use the toilet or eat here until they've gone.
We don't have money for a pest controller as we're struggling students and the type is similar to that one in my link but around 4 inches long.
What can i do to get rid of all of them asap?