The past decades have seen the implementation of numerous programmes for the eradication of molluscs, due mainly to their involvement as vectors of human parasitic diseases. These programmes have involved the use of vast quantities of molluscicides and have resulted in many unwanted side effects. This volume of the International Encyclopedia of Pharmacology and Therapeutics brings together reviews on the major molluscicides in current use. Each review outlines all the physicochemical, toxicological and pharmacological properties, as well as detailing the effects on all the other major organisms that they are likely to come into contact with. In bringing together all this information in one volume, this book will enable the use of molluscicides to be better controlled and far more effective, whilst preventing the serious ecological damage often associated with such programmes.