It's good practice to keep your garden tools clean and sharp. Not only does it help prevent the spread of disease, fungal infections and pests spreading from plant to plant or garden to garden, it also helps keep your tools in good shape and extends their life. Especially important for our gardeners as they use them daily.
Victoria, our gardener keeps a wire brush and clean rags (old cut up t shirts) in her tool bag and uses them to clean off dirt, sap etc. If she's been digging in heavy clay soil or when it's wet, spades and forks get very muddy, so she hoses them clean first using the power hose setting, then wipes dry with a rag.
Victoria keeps some wire wool in her bag too, to help remove any rust and sticky sap, especially on her secateurs. She also has a little sharpening stone to keep her tools sharp, which makes pruning a whole lot easier and it's much nicer for the plant having a good clean cut.
Once cleaned she uses either a bleach and water solution or Jeyes Fluid in a little hand held spray bottle and sprays the tools with this. It disinfects them and helps prevent the spread of disease. She then drys them with a clean rag.
Even though some tools are made of stainless steel, they will rust over time as they are constantly in contact with wet soil and damp conditions. So our gardeners spray them with WD40 to help protect them and keep moving parts moving.