I'm not sure how long it takes for the poison to do its thing (whatever that is), but if the mouse doesn't die right away, it might end up cralling under your stove, fridge, in your walls, or some other inconvenient place, and die there.
We had a mouse problem in our previous house, and decided against using poison (by itself) for the reasons mentioned above. Instead, we got one of those wind-up mouse traps and put poison bait (the bait isn't necessary though) in the compartment that the mouse gets "flipped" into. So, the mouse goes into the hole, gets "flipped" into the holding compartment, where it eats the poisoned bait, then dies. All you have to do after is throw out the dead mouse.
You can see an example of one of these traps at http://traps.freeuk..com/wind-up-mouse-trap.htm or http://shop.store.yahoo.com/mainsupply/minimouser.htm
We found this method to be very effective, and at least this way, you wont have to pull out your stove or fridge to retrieve the smelly, rotting mouse carcass.
poison
We had a mouse problem in our previous house, and decided against using poison (by itself) for the reasons mentioned above. Instead, we got one of those wind-up mouse traps and put poison bait (the bait isn't necessary though) in the compartment that the mouse gets "flipped" into. So, the mouse goes into the hole, gets "flipped" into the holding compartment, where it eats the poisoned bait, then dies. All you have to do after is throw out the dead mouse.
You can see an example of one of these traps at http://traps.freeuk..com/wind-up-mouse-trap.htm or http://shop.store.yahoo.com/mainsupply/minimouser.htm
We found this method to be very effective, and at least this way, you wont have to pull out your stove or fridge to retrieve the smelly, rotting mouse carcass.
-Vespertine