Avsnitt 7

Most of us shudder when we see a rat. Nearly all of us call for help. Ratcatchers are the men who come to answer our calls and soothe us. Those calls increased by 20 per cent last year. City rats live in our sewers. Here they multiply in a nice warm environment and we throw away an ever increasing amount of waste which sustains them and their young. From time to time they break out of the sewers bringing disease and destroying property . Some even appear in our toilet bowls.