In Quebec, according to current data, sales of domestic pesticides, that is, those used by private individuals, rose by almost 600% between the end of the 1970s and the start of the 1990s, and by 60% between 1992 and 1996. This development, which is the result of a keen interest in landscape maintenance and ornamental horticulture on the part of the public, is also a source of concern for many members of the public, as well as for public health authorities. This memorandum offers a…