After a long time of battling the elements, your patio furniture might need a tune up to look like new again. With 3-IN-ONE® Fast-Acting Penetrant, you can quickly and easily restore patio furniture by breaking up rusted parts, and preventing future rust from forming. Unstick bolts, nuts, and screws, clean off mildew, sand away rough edges, and breathe new life into your patio furniture with this effective penetrating oil.