A dissolvable effervescent toilet deodorizer includes a combination of citric acid, sodium bicarbonate, and essential oils. In one method of use, a user would drop the dissolvable effervescent toilet deodorizer into the toilet bowl just prior to using the toilet. Once dropped into the toilet bowl, the dissolvable effervescent deodorizer begins to dissolve and effervesce. As a result of the effervescence, the dissolution occurs more rapidly and also disperses the deodorizer/scent into the toilet water and air to more effectively neutralize and/or prevent malodors.