How to limit the rat numbers? Train the humans

D.C.'s Rat Rangers take anyone who is interested on night time safaris through some of the Capitol's filthiest back alleys to learn the way of the rats, and to be better humans.

<img src='https://npr.brightspotcdn.com/dims3/default/strip/false/crop/3000x2000+0+0/resize/3000x2000!/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2F51%2Ff1%2F1e14f61d4c2caabc0580abc81d0a%2Fnpr-ratrangers-01.jpg' alt='undefined'/><p>D.C.'s Rat Rangers take anyone who is interested on night time safaris through some of the Capitol's filthiest back alleys to learn the way of the rats, and to be better humans.</p><img src='https://media.npr.org/include/images/tracking/npr-rss-pixel.png?story=nx-s1-5980436' />