The rats usually wander off to die, so it is almost as if we did not even kill them at all - they just went away. To get the rats to eat the poison, it is flavored like grain. Unfortunately, dogs like the flavoring, as well. They actually like it so much that they will eat an entire box. Once ingested and absorbed into their bodies, the poison causes its deadly effects.
Most rat poisons work by inhibiting the clotting system.
In normal animals small vessels are always breaking and bleeding. Every time we move, sit down or get bumped, these small vessels break. The clotting system is so effective that these small bleeds are immediately stopped before they are even noticed. Rat poisons work by deactivating these clotting factors. Clotting proteins require Vitamin K to work.