Several cheap waterproofing sprays—like Kenyon Water Repellent, Jobsite Heavy Duty Bootmate, Rocky Boot Weather and Stain Protector, and Stand ‘n Seal grout sealer—can cause “shortness of breath, persistent cough and in some cases long-term lung injuries,” writes the New York Times. Unfortunately, you won’t see warnings on any of these products, because the CPSC keeps ignoring state requests to do something about it.