One of our current Mayor's most salient achievements during his  tenure  in DC was the significant reduction in the city wide crime rate.  Congratulations!!!.  DC is now a city with lower crime rates that should  translate in increasing levels of quality of life, prosperity, and all  of the direct and indirect benefits that come with lower levels of  crime.  However, I guess if we look at the statistics in detail and by  neighborhood--something that I have done by the way-- not all  neighborhoods have had reductions in their levels of crime but that's  meat for another blog....
But there is something that scares me  more than crime and that is RATS!!. In the past few months I have  witnessed a substantial increase in the population of rodents in my  neighborhood. I can't really attest if this is true in other parts of DC  but wouldn't surprise me if that's the case.
Crime has gone down  in the city but the rat population is only increasing. People may be  wondering: what the hell is this guy talking about? Crime goes down and  rats go up?!?!?! It is obviously a spurious correlation. Maybe is the  other way around, rats have multiplied and have scared criminals away...  bringing the overall crime rate down...not really, though!.  Then, what  is the apparent relationship that rats in crime have? it is a simple  one and with the same potentially negative effects!: property values.  Just as crime has detrimental effects on property values, so would  rats. The existing literature of the negative impacts of crime on  property values is extensive. Methodologies to calculate the costs of  crime on property values vary and so do the end results -- studies show  that the impact can range from US$ 2,000 to US$ 8,000 or more--. But all  studies agree on one thing: Crime has negative effects on housing  prices.
Studies on the economic impact of rats on property values  do not exist, at least to my knowledge, so I cannot offer you any hard  evidence of it. Moreover, given the way house prices have skyrocketed in  Washington in the past 10 years you probably will tell me that my  argument won't hold. However, I have found some websites that show how  much your house would lose by having these apparently harmless animals.  For example, the website (www.allstateanimalcontrol.com) claims that  rats in your house will result in a 5 to 10% average loss. This is a  significant loss of value of your property!!!!
Notwithstanding  their potential impact on property values, rats should not be able to  multiply in my neighborhood or anywhere else in the city for that  matter.
There are excellent models of pest-free policies to follow.  Look for example at the province of Alberta in Canada. It is the only  province in the country that has been rat-free for more than 50 years  thanks to aggressive-- and at the same time progressive-- government  policies on rodent clean up.  This can be done just as crime can be  reduced! However, I am still not seeing any action by my ward  representatives or the municipal government, at least not in my  neighborhood!
