This manual is designed to assist public health pest control officials in meeting the certification required under the Michigan Pesticide Control Act of 1976. The four sections included describe: (1) Insects of public health significance in Michigan; (2) Other arthropods that affect man; (3) Swimmers' itch parasite and snail host; and (4) Vertebrate pests. Section one discusses how insects affect man. Section two describes how mites, spiders and ticks affect humans. Section four discusses bats, norway rats, house mice, trapping rodents, baits and baiting, types of rodenticides, bird pests, and trapping birds. A list of self-help questions and instructions for completing the questions are presented at the end of each section. (HM)