Our carpet is 7 years old. It's quite dirty on the stairs especially near the edge of each riser. I'd like to hear some good tips about how to clean this part. I'm thinking of renting a steam vacuum cleaner from Kroger or Home Depot. I don't think I should drag it on each step of the stairs as I do on the floor. But using an attachment (if there's one) won't have enough sucking, will it?
My friend's Hoover SteamVac DualV allows up to 140F or 60C degree water. I didn't check Kroger's renting cleaner yet. But isn't 140F too low for a good job? I know "steam" is a misnomer but I heard the hotter the cleaner after the job, except perhaps the carpet won't be very soft if the water is too hot. Correct?
Can you also recommend a few brands of detergent?
Thanks for advice.
Yong Huang