Flypaper (also known as a fly ribbon) is a fly-killing device made of paper coated with a sweetly fragrant, but extremely sticky and sometimes poisonous substance that traps flies and other flying insects when they land upon it. Fly paper is considered a pest control device, and is subject to regulation in the United States of America under the Federal Insecticide, Fungicide, and Rodenticide Act. The poisons used in some older types of flypaper could potentially be toxic to humans and other animals. Historically, metallic arsenic (a well-known toxin to humans) was used in flypaper. Arsenic extracted by soaking flypaper in water has been used by several convicted murderers, among them Frederick Seddon and Florence Maybrick. Most modern brands of flypaper contain no poison, but only a non-toxic adhesive such as rosin.