Fastrac Blox is a neurotoxin and there is no antidote if children or pets consume the bait. If you have children or pets, it is recommended that you use Contrac Blox since every doctor and vet has the antidote, which is Vitamin K1.
Fastrac All-Weather Blox from Bell laboratories is a quick and effective solution to controlling populations of rats and mice, especially Norway rats, Roof rats and House Mice. Fastrac Blox are small, rough, all-weather baiting blox with many gnawing edges. A hole in the center of each block allows it to be placed on bait securing rods in tamper resistant bait stations. They are colored purple for easy identification. BLOX work well in any condition — wet or dry, indoors or out. Fastrac Blox offers a lethal dose of active ingredient bromethalin in a single feeding, with the first dead rodents appearing in one or two days after bait consumption.