I rent a farmhouse that's infested with 500 +/- bats that died within the walls. The landlord won't remediate the problem. HELP!

My wife, son and I work for my uncle on a farm he owns. We rent a farmhouse from him that's on the property. VERY LARGE bats have gotten into the rafters, walls, etc. My uncle "called a guy" who sealed IN the bats and now some 500 bats are DEAD within my walls. Urine, guano and dead bat smells permeate everything. The county has declared the house a health hazard. We called the insurance company and they don't cover bat infestation (bats are not vermin or pests). We have an estimate to remediate the damage for $55,000 but my uncle REFUSES to pay it. Instead he wants to hire a team of untrained Mexicans to replace drywall. MY QUESTION: Can my uncle be FORCED legally to properly remediate the problem. It's UNBEARABLE and UNLIVABLE!