Contains a long lasting, non-selective antimicrobial that inhibits microbial growth on all hard and porous surfaces. One simple application of SmartShield XLCTM prevents mold, mildew, fungus and algae growth on all surfaces. Most odors, such as those caused by mold, mildew & urine, are caused by bacteria. SmartShield XLCTM prevents bacterial growth on all applied surfaces. Long lasting antimicrobial protection that is easy to use and apply. Can be used indoors and outdoors, is invisible and will not change surface appearance.