Who's taking my Yard (bandit) signs?

[Adrian Smude]

I live in a smaller city where over the last few months the signs have had a long life, 2-3 weeks.  Typically there aren't many real estate signs around, but recently I've noticed a few other real estate signs out.  In the last few weeks my signs haven't lasted but a few days at best.  Typically I'd say it's the city picking them up, but I see other signs still out.  A few of the intersections that mine diapered there is still signs for New Homes.  My thoughts are the new home builder is taking my signs, or a new investor in the area is taking my signs, or I'm just the unlucky one that the city is grabbing my signs and missing others.  What are your thoughts?  What are your thoughts of how to handle this?