I typically pre-treat most stains prior to carpet cleaning.  This is a ok pre-treat but I like&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/BISSELL-Tough-Stain-Pre-treat-for-Carpet-Upholstery-22-oz/dp/B00006IV1N/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">BISSELL Tough Stain Pre-treat for Carpet & Upholstery, 22 oz</a>&nbsp;better.  I have beige carpet and this cleaner seems to occasionally leave a residue that leaves my carpet with a pink tinge.  I've been able to remove the substance by waiting until the spot dries and going over the spot with the carpet cleaner a second time.  For lighter carpets, I would recommend the&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/BISSELL-Tough-Stain-Pre-treat-for-Carpet-Upholstery-22-oz/dp/B00006IV1N/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">BISSELL Tough Stain Pre-treat for Carpet & Upholstery, 22 oz</a>.