You must maintain your apartment in a clean and sanitary condition including prompt removal of trash and garbage and placing it in a collection point container.

Removed all the trash, fixed the lights, proper dryer venting, etc.

Experience and time to have the sheriff remove the people?

In boston, as long as there is access to the whole house, used or otherwise( there can be a door) This is market dependent but one tip: remove the stove when the appraiser comes.

Most items will be removed. 

When that has been issued and the problem still occurs you could pursue other more extreme measures related to removing them from the property (per your local regulations for eviction/non-renewal/etc) or charging a fee if it's allowed.Finally, have you read through your local landlord/tenant laws?

It sounds like the floor in the laundry/maintenance room, kitchen, bathroom and closet with be removed, for sure drywall on 2 walls in maintenance room, most likely 1 wall of cabinets and possibly the other half of kitchen cabinets (lower) and then some carpet will need to be pulled up to help dry out.

I'd put the link to my post but BP will remove it.

The tree guy said he can cut it to a stump without taking down the fence, but to grind the stump would need to remove the fence which I want to try to avoid.

I posted once before about ending a relationship and buying her out. 
So, we had a duplex in Naples end up with no tenants. Both flaked out and disappeared overnight. I contacted my ex and suggested we spend $50K eac...