Because of the mercury or other toxic substances in many light bulbs, businesses and institutions are responsible for properly storing and recycling used bulbs that are considered hazardous waste. This would include tube-style fluorescents and CFLs. For more information on the requirements for businesses and institutions click here.
Wisconsin has no legal requirements for disposing of bulbs that come strictly from households. Household waste is not regulated as a hazardous waste, however, the DNR encourages households to recycle bulbs when possible. Click here to find a CFL recycling participating retailer near you.