14 Home Products That Were Surprisingly Dangerous
Some common home products once sold were more dangerous than people realized.
- Sophia Zapanta
- 4 min read

Many household products from the past had hidden risks that caused harm or injury. These dangers were often unknown until accidents or health issues occurred. Over time, safety standards improved and many of these products were removed or changed. Knowing about these risks helps people stay safe at home.
1. Asbestos Insulation
daryl_mitchell on Wikimedia Commons
Asbestos was widely used in home insulation for its fire-resistant properties. Later, it was discovered that asbestos fibers cause serious lung diseases and cancer. Removing asbestos requires careful handling to avoid exposure. Today, asbestos is banned or strictly controlled in most countries.
2. Lead Paint
Thester11 on Wikimedia Commons
Lead-based paint was commonly used in homes due to its durability and color. Exposure to lead paint chips or dust can cause lead poisoning, especially in children. Lead poisoning affects brain development and can cause lifelong health problems. Lead paint has been banned in residential use since the late 1970s.
3. Chloroform
Fæ on Wikimedia Commons
Chloroform was once used as a cleaning agent and solvent in some household products. It is toxic and can cause dizziness, unconsciousness, and damage to internal organs. Its dangers were not well known to consumers at the time. Chloroform is no longer used in household products.
4. Mercury Thermometers
Jacek Halicki on Wikimedia Commons
Mercury thermometers were common for measuring temperature at home. Mercury is highly toxic if the thermometer breaks and the liquid is released. Exposure to mercury can cause serious health problems, including brain and kidney damage. Mercury thermometers have been replaced by safer digital versions.
5. Radium Clocks
Mettness on Wikimedia Commons
Radium was used to make clock dials glow in the dark. Radium is radioactive, and prolonged exposure can cause cancer. Workers who painted these clocks suffered serious health effects. Radium is no longer used in consumer products.
6. DDT Insecticides
Xanthis on Wikimedia Commons
DDT was a popular household insecticide in the mid-20th century. It was later found to be harmful to the environment and humans. DDT exposure can cause reproductive issues and cancer. The chemical has been banned in many countries for home use.
7. Freon Refrigerants
Suyash.dwivedi on Wikimedia Commons
Freon was widely used in refrigerators and air conditioners. It is harmful to the ozone layer and can cause environmental damage. Some Freon leaks can also be dangerous to health. Freon has been phased out and replaced with safer refrigerants.
8. Paraffin Candles
AmarilloCalabacin on Wikimedia Commons
Paraffin wax candles were common in homes for lighting and scent. Burning paraffin releases toxic chemicals like benzene and toluene into the air. These chemicals can increase indoor air pollution and cause respiratory issues. Many now prefer candles made from natural waxes.
9. Shoe Polish with Toxic Solvents
D-Kuru on Wikimedia Commons
Older shoe polishes contained solvents that were flammable and harmful if inhaled. Prolonged exposure could cause dizziness and damage to the nervous system. Some products had ingredients now known to be carcinogenic. Safer formulations are used today.
10. Carbon Tetrachloride Cleaners
TimJW12 on Wikimedia Commons
Carbon tetrachloride was once used in household cleaning products and spot removers. It is highly toxic and can cause liver and kidney damage. Its dangers were not fully understood until many poisoning cases occurred. It is no longer used in consumer cleaning products.
11. Kerosene Heaters
Douglas P Perkins on Wikimedia Commons
Kerosene heaters were popular for home heating. Improper ventilation could lead to carbon monoxide poisoning. The heaters also posed fire hazards if not used carefully. Safer heating options have replaced kerosene models in most homes.
12. Lead Pipes
Basile Morin on Wikimedia Commons
Lead pipes were common in home plumbing systems. Lead can leach into drinking water, causing poisoning. Long-term exposure affects brain and kidney function. Lead plumbing has been banned and replaced with safer materials.
13. Old Fireworks
Richard Ellis on Wikimedia Commons
Fireworks used at home were often made with unstable chemicals. Misuse or poor storage led to accidents and fires. Many early fireworks lacked safety features present today. Strict regulations now control fireworks for consumer use.
14. Mothballs with Toxic Chemicals
Wiki Farazi on Wikimedia Commons
Mothballs contained chemicals like naphthalene or paradichlorobenzene. These chemicals can cause respiratory problems and poisoning if inhaled in large amounts. Improper use increased the risk of exposure. Safer pest control methods are now preferred.