Never combine any products that contain ammonia and chlorine bleach. When these common household substances are combined, they form a gas that is highly toxic and can result in serious breathing difficulties or death.Always take the time to read the warning label on any chemical product you use. The label provides safe guidelines for using that specific product. In addition to the information on safe usage, the label also generally provides information on safe storage and gives instructions on how to protect yourself properly when using the product such as the need for protective gloves, eyewear or ventilation. The label also includes the contact information for the manufacturer of the product.Always follow the manufacturer's safety recommendations when using any chemicals, products that contain them or any other substances that are hazardous.