The steps are so easy and you can use any scent that you want. Refilling your oil containers also cuts down on the amount of trash that you have so this is a cheap and environmentally friendly tip. There are just a few steps:
1)Take the wick out of your old plug-in
2)Fill the container about ½ full with your favorite essential oil
3)Fill the remainder of the container up with water
4)Replace and use
Note that you can also use liquid potpourri that you can find at any Dollar Store for around $1. If you are using this method, eliminate the water and just fill the entire container with liquid potpourri. Then just plug it in and enjoy! This really is an easy way to fill those plug-ins and save money to boot.