That doesn't factor in the human cost of death and injury of men and women in uniform protecting fossil fuel supply, or death and injury from localized pollution and environmental damage.When you factor those true costs in, solar and renewables win hands down.

Should I give them permission for air duct cleaning or are there any red flags like if any injury or house damage occurs due to this who is responsible etc.?

In many states, the Workers Compensation Board (or similar state organization) ultimately determines if an injured person was an employee at the time of injury. 

  :)If you feel that a TV is essential, then mounting it in a common area has the advantage of making it harder to steal and harder to cause injury.

I asked them why do they keep that fee when I when I am the one taking all the risk (damages, injury, etc).

Literally the day I registered with BiggerPockets I got a phone call at my office...I am a lawyer (personal injury aka ambulance chaser) by trade and my CPA called to see if I could handle a landlord tenant case for a client of his with an apartment complex.  

I am now being sued for personal injury by the other party Involved.

See an attorney, one experienced in financing and foreclosure issues.Jynell, totally agree as to litigation increasing in the future, it may get as popular as personal injury law but may not be as lucrative in serious matters. :)

If fireworks are used on the street, Tenant agrees to take proper precautions to prevent injury to people and damage to property, to have a means to extinguish the fireworks safely, and to clean up all firework debris promptly.  

If there is a lawsuit pending for personal injury or against the developer, you'll have trouble financing, and future buyers will have trouble getting approved.