Insecticidal

Insecticidal is a 2005 Canadian comedy horror film directed by Jeffery Scott Lando. In the film, a college student performs experiments on insects until a housemate tries to kill them. The insects grow to huge sizes and turn the sorority house into a nest, trying to kill the residents.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.