I calculate a few of these daily  for practice. 

This is what I tell myself everyday -thrice daily!

It would require insecticide applications on a daily basis in some areas, and this is not efficient or environmentally sound.

Weekly, daily, hourly, every 15 minutes?

I come across many desperate sellers almost daily but they are still trying to hang onto their property in most cases but a percentage of the masses are open to liquating/selling the property but many are clueless as to how to do so successfully.

I am planning to invest in seattle area, Ballard fremont or queen anne, average price 700k-850k , average rent for airbnb  is 250-350 daily.

I just recently picked up Brandon Turners book on Rental Property Investing and have been listening to the BiggerPockets pod cast daily.

Issue them a 3 day notice (or equivalent that's required in your state) if they don't pay rent by the time that notice expires evict them.......Problem solved.Also worth noting that a daily fee may be a no go anyway as most jurisdictions limit the amount of late fees that you can collect. $35-$75/mo is a common limit for properties renting for under $1,000.

Lease ended July 31, tenant asked for more time to move so charging him a daily rate.  

My lease has a $500 fine per pet and I think a daily fee...on my no pet properties.