-Requires at minimum three men and 20 minutes per house.
-Assuming a private company with one of these en being the owner, and an average of 20 new houses per month (at $25/hour):
-20 minutes * 20 houses/60 min = ~7 hours
-7 hours * $25/hour = $175
-$175*12 months = $2100/year
~$4200/year to spray paint dirt.