I found a recipe awhile back for homemade scent killer spray. It seemed to work well for me, just as good as the commercial overpriced stuff. I found this from qdma. 16oz hydrogen peroxide 16oz distilled water 1/4 cup baking soda 1oz non scented shampoo(like the green scent a way soap) Mix all ingredients and pour into a plastic milk jug. Only stir the mix and try to avoid shaking it. Let the cap sit loose for 2 days so the chemical reactions have time to release gases and your good to go! Worked for me.