Outdoor garden furniture, decking, pergolas and other patio and lawn wood surfaces are susceptible to fungal growth and UV damage. You can protect your outdoor decks and furnishings with the natural ingredients found in Festool Outdoor Oil. This 5-liter bottle has an easy pour spout that's designed for use with the Festool SurFix Finish Applicator. However, it can also be used without the SurFix system. Festool 498069 outdoor oil is your best solution for protecting wood surfaces from the elements.