First, read over the PA Landlord Tenant law and understand your rights and obligations. The best practice for landlords and tenants is to complete a move-in/move-out walk though and include paperwork noting the condition of the home at both times. With the advent of digital cameras & video it's not a bad idea to document any damages before and after this way too.
In your current situation, if the lease you signed indicates you must clean the carpets, you are probably obligated to clean them. You can argue that you never received this benefit and you cleaned the home completely yourself, but this was your choice at the time.
As far as your notice is concerned, consult your lease and the landlord tenant act. The Landlord Tenant act will likely override your lease if there is a conflict.