The first thing to do, even if your furniture was covered or put away over winter, is give everything a good clean. The thoroughness of your clean will be determined by the condition your stuff. If it has been covered or stored in a shed or garage, there’s a good chance it will only need a wipe over with a damp cloth. However, if it has spent time outside and exposed to the elements, you might need to give it a brush down and scrubbing with soapy water to remove moss, twigs and leaves that have built up.