Pet collars containing tetrachlorvinphos (TCVP): evaluation of the results of torsion and on-animal release studies and implications for post-application consumer exposure and risk analysis

Tetrachlorvinphos (TCVP) is the pesticidal active ingredient found in some flea and tick collars for dogs and cats. Recent studies sponsored by The Hartz Mountain Corporation, confirm the safety of TCVP as an active ingredient in pet collars. Based upon data from these new studies and results previously relied upon by the U.S. Environmental Protection Agency, the following conclusions have been made: