2 cups Baking Soda
1/2 cup water
10 drops Tea Tree Oil
10 drops Lavender Essential Oil (EO)
(I suppose you could use 20 drops of some other EOs but I am going for the properties of these oils)
2 glass bowls
1 12 muffin tin - I say tin, but I only have a silicone one. If you use tin, I would line the pans with something to make it easy to get them out later, like silicone liners.
The mix should be like wet sand, but not too wet - you just need it to clump so you can put it in the muffin pan.
Pour 2 cups of baking soda in a bowl. Mix water and EOs together in a separate bowl. Add water and EOs to the baking soda and mix until well incorporated.
Take approximately one large spoonful of the mix in each cup of the pan. Press the mix into the cups. I had my 2 year old do this job and he loved it - mashing a cup into the pan forms.
Set the pan in an area that will not be disturbed and is not very humid for about 24 hours. Remove the discs from the pan and place in the bottom of garbage pails, or anywhere you need a little extra deodorizing power.
These discs are a little fragile so handle with care. If they stop working - you no longer smell the pleasant smell of the oils, then you can always add a few drops of oil to the disc to refresh it. I am storing the extras in a glass container (so the oil is not absorbed into a plastic container) and in the back of the pantry so they are not jostled too much.