To keep your carpets clean from bacteria and allergens, these are the steps you should be taking:Vacuum regularly. While vacuuming doesn't remove all of the dirt from your carpet, it is essential to keep debris from building up. Consider placing rugs in high-traffic areas. Protecting your carpet with a washable rug is a great way to make sure you're walking on clean floors. Remove shoes before walking on your carpet. Over 70% of people admit to walking on their carpet with shoes on. Doing this pushes large amounts of dirt deep into your flooring. Get your carpets professionally cleaned at least every 12-18 months. Some homes may need professional carpet cleaning more frequently, depending on their lifestyle and personal preferences. Professional carpet cleaning equipment can wash away nearly all traces of dust, dirt, allergens and bacteria, helping prevent mold, respiratory problems and long-term stains.