The one exception would be if they own an official company that you would have considered anyway - in this rare instance I would still require a formal quote, invoice and pay them like any other professional.Never take “favors” from your tenants.

Call a dang exterminator and do the right thing. 

Get the copy of his ID when he turns in the application (use your phone, lay the ID on the app to take the photo).Hopefully you are in a location where you can even evict - be sure you are adding his fees onto a monthly invoice, showing the running total past due.

Dang, sometimes I just go on and on.... :-)

Create an invoice (using items Security Deposit mapped to Security Deposit (liability account). b.

If you truly mean the best as the most expensive, invoices will be over $200,000.

I sent them an email stating all of my concerns and asking for invoices and proof of items that were fixed.

I agree with @Travis Spar (dang link thing never works for me).  

She is a bit hot now , her boyfriend tells me " we need 3 estimates " Sorry , all I have to do is give you is a copy of the invoice Why cant you do the work to save me money ?      

Judge might ask for proof of invoice for your original cost and age of carpet.