Move your table into the yard or driveway and hose it down with your garden hose. Set the hose to the highest possible pressure to remove lose dirt and particles. Allow the table to dry completely.
Use a palm sander to sand wooden parts of the table. If your table has a wooden top, focus on removing the previous finish completely by running the palm sander with the grain. Use individual pieces of sandpaper to work on crevices and detail. If your table is constructed completely of metal, skip to step 3.
Brush rusted metal with a steel-bristled brush. Sandpaper can also be used to remove rust.
Hose all sanding dust and loosened rust off the table with the garden hose. Allow the table to dry.
Tape off wooden parts of your table. Use outdoor spray paint to paint the metal parts of the table. Allow the paint to dry.
Apply stain or mineral oil to the wooden tabletop or legs. Stain will alter the finish color of the wood while oil will preserve the wood without changing its color. If you choose to treat your wood with mineral oil, reapply this every few months to best preserve the wood.