Use it up. When products are fully used up as intended there is no hazardous waste. Buy only as much as you need. Don't buy a gallon of paint, pesticide or specialty cleaner when a quart will do. The large container may cost less per ounce, but leftovers must be stored or dispose of so as not to harm people or the environment.
Recycling means cleaning the potential waste so that the product is usable again.
Recycling helps reduce the overall demand for hazardous household products and the amount of waste produced. Presently recycling is available for only a small number of products. Paint thinner, automotive oil and transmission fluid can be recycled. You can recycle paint thinner at home. Pour paint thinner or cleaner into a jar.