Tips: Vacuum your carpet regularly pay attention to high traffic areas it will remove 70 % of all soils, use mats and area rugs at front door to help remove soils from shoes, and wearing socks is better than barefoot. Remember your carpet is like a giant filter for your house it traps dirt and debris, dust and all other foreign contaminents. It needs to be cleaned regularly on average every 6mo to 1 year professionally depending on amount of foot traffic. Also when doing spot cleaning use a mild detergent and water. Or look online for spotting tips. Using spotting products you buy at the store are very soapy high in (Alkaline) and can make a spot look clean, but leaves the soap residue in your carpet only attracting more dirt and soil build up to that area increasing the size of the spot. Always call a professional if unsure and when certain spills happen ie: Blood,Wine, Ink, Kool aid, Pet Urine......