At all times during the Lease Term and throughout any Removal Period, Landlord and Tenant shall, each at its own expense, maintain a policy or policies of comprehensive general liability insurance with respect to the respective activities of each with the premiums thereon fully paid on or before due date..."

When tenant leaves, the filter becomes property of the landlord or the tenant must pay to have it professionally removed and provide receipts of evidence. 

Also trash removal needs to be privately secured, as public carrier will only pick up along public roads. 

I would give them a written notice that they have 72 hours to pay what they owe or remove their belongings.

Tyler Having a wildlife type removal company is the best thing to do immediately.

If the property is in California, sticking with a month-to-month lease may make it easier to remove a problematic tenant.

As well as nails and screws removal and patching large holes from walls.”

Please provide the necessary documentation no later than [DATE/TIME] or confirm your intent to terminate the current lease and vacate no later than [DATE/TIME]"That's a very simple example, but gives you an idea.I also recommend you make tenants responsible for improvements, that they be at tenant cost, and that installation and/or removal be done professionally with receipts as proof.

It appears they tried to remove the stains, but they are still visible.

If you ask the manager to justify a fee and he starts hemming and hawing, move on or require them to remove the fee.