However, you are responsible for the rent and damages until both of your friends move out and surrender the premises."

They at least called the SPCA and surrendered their dogs to them, since they couldn't take them with.Surprise! 

Here are "a few".Application to RentAsbestos DisclosureBank Draft AuthorizationKey Forms for receiving and surrendering keysLate Charge NoticeLead DisclosureLease AgreementLease Violation lettersLease RenewalMove In FormMove-Out FormCredit Report FormsNo Pet/Pet AgreementNoise Warning NoticeNotice of Intention to Enter DwellingNotice of InspectionPest ControlProperty Abandonment FormsHow Security Deposit is HandledSmoke Detector Carbonmonoxide AgreementNotices to Pay Rent or VacateMaintenance Request FormsYou can reference your landlord tenant laws in Connecticut to make sure any forms you use are in compliance.http://www.jud.ct.gov/lawlib/law/landlord.htm

I tell them rent will continue to accrue until/unless they PROPERLY surrender possession.  

I would have them sign an agreement NOW stating that they are surrendering the property and all of their rights to it for $X.

Tenant agrees that upon expiration of the term of this lease, or upon the earlier termination of the lease for any cause, Tenant will at once peacefully surrender and deliver the Leased Premises together with all improvements thereon to Landlord in the same condition as received, ordinary wear and tear excepted.15.

The premiums may be higher, but the amount you are "overpaying" belongs to you and you can get it back if you surrender the policy. 

Cross I's and Dot your t's with the notice (make sure you spell out the address and all premises included; list all tenants; give the specific date of surrender).In most states you would file an eviction for unlawful retainer of premises (or something to that effect).

That's human nature; to surrender when uncomfortable.When I'm stuck on a step it means that I haven't sufficiently completed the action required for the prior step. 

. §§ 250.511a)Deadline for Returning Security Deposit: 30 days of termination of a lease or upon surrender and acceptance of the premises, whichever first occurs. (68 P.S. §§ 250.512)Security Deposit Interest: The tenant is entitled to interest after the second anniversary of giving a deposit.