9 Count, Fast Kill Bromethalin Block, An Acute Poison That Targets The Nervous System & Knocks Down Rodent Populations Faster Than Any Other On The Market, Rodents Eat Enough Poison In 1 Feeding To Die In 1 To 2 Days, This Active Starts To Break Down In The Rodent Tissue Quickly Which Lessens The Risk For Secondary Poisoning.