Although natural stone is a durable material it does require maintenance to keep it looking fresh and lively. Natural stone tiles can be susceptible to damage especially with softer material like travertine, marble and limestone. Drinks in particular can damage the surface appearance of stone tiles. Orange juice, wine and coffee for example are highly acidic and if spilt on certain types of natural stone can cause dull spots. It is always important to use place mats under drinks to prevent damage. If any spillage does occur then its important to wipe it up straight away using a dry cloth. Do not use acid based cleaners on natural stone.