how to get a white carpet clean?
I okorder.com., to locate a pro near you.
You can rent a shampooer at any store or buy one at wally world. When you do shampoo, remember to rinse afterwards. The instructions may say let dry then vacuum but don't believe it. It always leaves it sticky and will stain more. Rinse a couple of times to make sure.
If it's really bad, hire a professional. They have the right cleansers and machines to do a better job.