Any help you can provide to lighten these high traffic areas would be greatly appreciated.

Answer: You should begin by pre treating your heavy traffic areas with Tough Stain Pre-Treat for Carpet and Upholstery for 10 minutes. Then, use your BISSELL portable or upright deep cleaner over the affected area. Try drying your carpets with a fan blowing on it, once dry if the stain remains, treat with OxyPro® Stain Remover for Carpet  and let it work until it dries on its own.