We sell products that are very effective in controlling odor and removing what causes odor; one is called "Alive" and another is called "Dissolve Away." We also sell one for yellowing, called "Tan-ex." Check out our "Bottled Chemicals & Spotters" by clicking here.
TIPS FOR CONTROLLING ODOR: Regular cleaning and stain treatment will release the locked in odors. The best cure for odor is a deodorizer. There are several different deodorizers available. Some that simply mask the smell with a stronger - hopefully more pleasant odor. There are those that will sanitize. Then there are the ones that use live bacterial enzymes to literally digest the bacteria causing the odor (this is best for odors caused by organic substance).
First, it must be determined what is causing the odor. Then it's important to find out if the source of the odor has soaked into the carpet backing, the pad, and possibly the flooring under the pad.
If it is just in the carpet fibers then a simple application of deodorizer should be used in the cleaning process. If the source of the odor has soaked into the backing or the pad. Somehow the deodorizer must come in direct contact with the source in order to neutralize it. One of these methods might solve the problem:
1) After determining the exact location of the effected area, inject the carpet with deodorizer using a syringe.
2) Remove the carpet and replace the pad.
NOTE: Some products like hydrogen peroxide, ammonia, bleach or alcohol can actually bleach or change the color in some fabrics. Read the WARNING notice below and proceed with caution.