These products are particularly dangerous around children. Always use a drain basket. For persistent clogs, use a metal drain snake. Furniture polishes contain petroleum distillates which are flammable and very dangerous if swallowed. Avoid contact with skin and work in well-ventilated areas.
Most wood polishes contain phenol which causes cancer in animals.
Residual vapors contaminate your home long after application. Wood polish can also cause severe skin irritation. Use a mild vegetable oil soap on varnished wood. Scrub scuff marks with toothpaste. For wood floors use a mixture of mild vegetable oil soap and water and dry immediately.