How often do you need to replace the inner liner? How often do you need to replenish the chemical? Also, what chemical disinfectant do you suggest using this mat?

The liner replacement, as well as replenishment, will depend on the overall foot traffic. High traffic areas will require more frequent cleaning and replenishment of the product. As far as what to recommend we have several products that target different areas. Please reach out to our sales department for assistance at 888.433.6340.