$$ spent to get rid of graffiti

Graffiti on Washington's highways – Big problem, few resources.
" We use fencing in target areas to block access, install additional lighting where possible, and even use motion sensitive sprinklers. It is a never ending battle of who will get there first"

http://wsdotblog.blogspot.com/2012/03/graffiti-on-washingtons-highways-big.html

"Graffiti removal for just our Seattle office (which covers the Canadian border to the King/Pierce county line) costs between $120,000 and $145,000 annually."
What it costs to remove graffiti - a full time job.