where is the best place to get warning signs for nuisance control?

Sit down at your computer type up what you want it to say, print it off on bright yellow card stock, put in document protector opening down, tape bottom with clear packing tape and it you really want them noticed use orange duct tape around the edges.
Using the duct tape allows you to use push pins through the tape and not make hole in the doc protector keeping it waterproof.

Unless required, I would stay as stealth as possible.

Agreed.



However , in a pinch , I have used this homemade sign on the inside of my driver's side , side window when having to park my truck somewhere questionable for a brief period. Don't know if it truly worked , but never got ticketed or harassed.




To all - copy and use if you wish.