I dont consider this being common sense. If I do a
sign and its not been paid for it is MINE! bolted, screwed glued, I dont care. Im not a rebel nor a thug but I will not tolerate not being paid for something. Belive me I go thru lots of contact calls and emails to establish payment and when it gets to the point of being ignored (as it will happen) thats when i decide to take action. When you remove a
sign you do not have to contact them and let them know. they WILL, magically, start contacting you again. And time and time again its the person that has been ignoring you and they always place blame on others.
You may agree or disagree but to date this is the most effective way of collecting when clinets show they have lost interest