Episodes of indoor exposure to toxic compounds in companion animals are frequent. Toxico-epidemiological data on this matter are fundamental not only to take proper corrective actions but especially because domestic animals represent crucial sentinels for environmental toxicants. In this review we will present an overview on indoor poisoning of companion animals by chemicals in Europe, providing information on trends and emphasizing emerging indoor contaminants. In general, pesticides are the most frequent class of toxicants involved in indoor animal poisoning episodes in Europe. Among them, insecticides (in particular anticholinesterase compounds) and anticoagulant rodenticides are frequently implicated, but molluscicides (i.e. metaldehyde) together with household products have also shown a growing or at least stable trend in the poisoning episodes. Considering the emerging molecules, neonicotinoids (imidacloprid and acetamiprid) and glyphosate formulations have been pointed out, whereas with regard to households, besides the well-known ethylene glycol, attention should be paid to emerging products such as sodium polyacrylate polymeric hydrogels, xylitol, glowsticks and liquid laundry detergent capsules. The environmental contamination by chemical households is a global challenge and bioindicators like pets may be valuable tools to perform a comprehensive monitoring and risk assessment.
Keywords: Companion animals; Environmental poisoning; Households; Indoor; Pesticides.
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