Can I break my lease if there are cockroaches in my apartment building and they make my apartment uninhabitable?

Question Details:

There were cockroaches in my building before I moved in per other tenants. I have contacted the landlord several times, once her husband sprayed in my apt only. They did get a professional company to come in and spray but the bugs are back and now the landlord seems to want to blame the entire problem on me. I want to break my lease and move due to inhabitable living conditions. What are my rights? Important Notice