1.   The rat ravened the poisoned bait just as we had hoped.

2.   And poisoned bait, he says, can be ineffective because mice may develop a natural immunity to the poison.

3.   One night before the kittens had even opened their eyes, BC, and half a dozen other neighborhood pets, got some poisoned bait tossed over backyard fences.

4.   Short-term preventive measures would include setting rat traps with poisoned bait and using pesticide sprays to kill rat fleas.