The government has issued warnings that formaldehyde can cause cancer and that styrene might as well. Formaldehyde, the report says, is found in worrisome quantities in plywood, particle board, mortuaries, and hair salons, while high levels of styrene are found in boats, bathtubs, and plastic cups and plates. The government's Report on Carcinogens said consumers should avoid contact with the materials, but that they probably don't pose a serious risk to most people. The workers who make formaldehyde and styrene products, however, are at greater risk. The report was delayed for several years because of intense lobbying from the chemical industry.