Can I use 3% hydrogen peroxide in my new Proheat2x to lighten leftover stain on my light carpet after deep cleaning once?

Answer: No, hydrogen peroxide is not recommended to be used in any of our BISSELL products. Using other products other than what BISSELL recommends for portable or upright deep cleaners risk damaging the heater of your machine. BISSELL has several great deep cleaning formula options for portable and upright deep cleaning. You can try BISSELL OxyPro Stain Remover to treat the stained area.