The answer to 'how to kill mouse' is to use humane traps or poisons to safely eliminate mice in your home. Mice can carry diseases and damage property, so it's important to address an infestation quickly. Start by identifying entry points and sealing any cracks or holes where mice may be getting inside. Then use traps or baits to capture and remove the mice from your home.
When using traps or poisons, be sure to follow all safety instructions carefully. Keep them away from children and pets, and dispose of any dead mice properly. You may need to set multiple traps or reapply bait over several weeks to fully eliminate the problem.