Can you re-use it? Storing leftover paint is easy as long as you keep the tins away from direct sunlight and in a frost-free environment. If you only have a small amount remaining, pour the leftover paint into old jam jars. Tip: If you have leftover whites, mix them together and use a base coat next time you decorate.
Can someone else re-use it? Pass it on to neighbours or friends, or perhaps a children’s home or underprivileged school might find a use for it.
It’s important to remember that you can’t tip paint down the sink or your drains. In South Africa paint is often mixed with general waste and finds its way into waterways, its best to mix the paint you want to dispose of with some spare cement or sand, leave it out for the solvents to evaporate and once dry peal it out and disgard it in your normal waste.
For large amounts of left over paint you can contact a company like EnviroServe, who will dispose of the paint for you.