<human>: My family moved into a new apartment riddled with bed bugs. It has taken a huge toll on our mental and physical health as we have been dealing with them since April. 

We have notified the leasing office multiple times and they've sent maintenance to fumigate twice. This has had basically no effect on the bugs. We've thrown away thousands in property including all our mattresses, bedding, living room furniture, curtains, coats, etc. We are currently sleeping on plastic air mattresses in the living room and heat treat the clothes we wear daily as well as keeping the remainder of our clothes and towels in plastic trash bags in our vehicles. 

We have been more than cooperative with the landlord and management, but at this point we're positive they're not willing to spend the money to permanently exterminate the bugs and are seeking to break our lease and move to a new apartment.

Because we're positive the bugs are living inside the walls of our bathroom and master bedroom, we're not able to use those any more. Does this provide me grounds to break my lease and file for Constructive Eviction should my landlord attempt to claim an Unlawful early move out or penalize me with re-letting fees? I understand this option should be my last resort and I am still pushing for a mutual agreement to break the lease but I wanted to know if I have a case should I need to pursue that avenue. Any help is appreciated!!

Could you distill the essence of the text into 1-3 sentences?
<bot>: Bed bugs own my apartment now. We've spent months fighting them but they live in the walls. What's the best way to break my lease?