You know those sprays that you can spritz into the toilet before you go and it traps the smell in the toilet bowl? Well you can make your own in any scent you like.
In a spray bottle, add 2 teaspoons of rubbing alcohol, 3/4 of a cup of water, and 2 teaspoons of liquid soap. Shake it up and add 15 to 50 drops of essential oil, depending on how strong you want the spray to smell.