[Cob] Cob Bench and Grafitti

[Jason]

Hello,

I'm going to build a cob bench for a local park. One
of my concerns with the finished product is graffiti
mainly in the form of felt pens used to write gang
symbols, spray paint is also a concern. I'm wondering
if there are glazes or sealants to put on the bench
that will make it easy to clean of graffiti? I want to
be as natural and cost effective as possible. Thanks
for any help!

Jason

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com