*Getting Ready:*
1. Finely mince the onion.
2. Let the chopped onion soak in water for at least a couple of hours.
3. Remove the onion chunks by straining the mixture.
*Directions for Use and Storage:*1. Put the water that has been infused with onions in a spray bottle or any container that has a cover.
2. Put the bottle or container wherever rats like to hang out, such next to food sources or along a wall.
Finally, spray the rat paths or access locations with the onion-infused water.