Because it's rat posion
Coumadin (warfarin) is the active ingredient in rat poison. That being said, Coumadin is dosed, for humans, in a manner which prevents blood clotting (especially for those at risk), and does not act as a poison at the therapeutic dosage level. (However, when rats ingest the high concentrations of warfarin in rat poison, they bleed to death, internally.)
No, rat poisoning can not kill lizards.
Bromadiolone is found in rat poisons and is composed of Bromine.
there is tar and rat poisoning in them
It's the other way around. Coumadin, long-time anticoagulant medication used by humans was applied as a rat toxin. The idea was that, a medication in a dosage harmless to humans would prove fatal for rats, mostly because of comparative sizes: A dose for a 150lb human was a massive overdose for a 6oz. rat. And this worked for a while. However, rats evolved past this and now, a human-normal dose of coumadin is no longer toxic for rats. To address this we've gone on to "super-coumadin" for rats -- another anticoagulant, only this time the rat-lethal (or LD50) does is also acutely toxic to humans.
vitamin k
Yes it has a special cemichal in it called simpallicar that is also found in rat or mouse poisoning
The chemical warfarin is a blood-thinning agent (trademark name Coumadin) also used as rat poison.
rat poisoning
They poisoned the rats with rat poisoning.
If there were, A LOT of people would be in serious trouble.