Our fabulous Natural Kubu Wicker products are so versatile they can be used inside or outside and left our all year round. Although they need to protection against rotting and insects - the oils in the wicker and teak feet on the chairs repels insects naturally! - they do need protection against UV rays to prevent fading. If you are happy for your chairs or sofa to weather to a lighter grey/white then its fine to leave them totally untreated. However if you are looking to keep them as fresh as the day you purchased them we recommend sealing them with our Clear Garden Sealer to protect against fading. This is also handy if you are choosing to use your furniture in a conservatory or area where natural light is in an abundance. Beautiful Kubu Wicker, naturally of course! 122b