Red Wine
Extract the remaining liquid (blot or vacuum). Apply white wine. This recreates the initial conditions, especially on old stains, making it easier to remove. Extract and repeat, or do this in conjunction with a commercial spot cleaner. Rinse well and dry the carpet quickly.
Chewing Gum
To remove chewing gum from carpet, get out your electric hair dryer. Heat the gum, being careful not to melt the carpet fibers. Use a piece of plastic wrap or a plastic bag to lift the softened gum away. Just allow it to stick to the plastic, then pull it up. This may get most of it. Next, apply Extra Strength Ben Gay, or another muscle rub containing methyl salicylate. Use plastic again, or a rag to pull more gum out. Repeat if necessary. Once you completely remove the chewing gum from the carpet, clean the area with a mild detergent solution (a few drops of dish soap in a cup of warm water will work). Rinse with warm water and dry the area.
Bleach
Bleach stains on carpet can’t be removed, since the dye has actually been removed from the carpet. A carpet cleaner that does dyeing can spot-dye the bleached area to match the surrounding carpet.
Coffee
Use carpet coffee stain removers sold at Walmart and other stores. You can also try white vinegar. Heat the area with a hot, wet cloth, dab with vinegar, rinse, extract, and repeat. Dry the carpet well when you are done.
Dye Stains
Dyes from medicines, foods, cosmetics, crayons and other household products can each react differently with carpet. Try the procedures on the page; How To Get Out Carpet Stains Of All Types. If the stain is permanent, it may be possible to hide it by spot-dyeing. Call a carpet cleaner that does this.
Mustard
Depending on the type of mustard, it may be necessary to cut out the stain and insert an undamaged piece of carpet. Try general cleaning procedures first.
Rust
If it is a fresh stain, try general cleaning procedures. Professionals can remove almost all rust stains, but the chemicals used are somewhat hazardous for casual use.
Wax
To get the candle wax out of the carpet, put a clean brown paper bag over the spot, and place a clothes iron on it, set on low.
The wax will liquefy and transfer to the paper. Apply a new paper bag as often as necessary until you get out all of the wax. This may take a little time
Butter, Cooking Oil, Hand Lotion, Mascara, Shoe Polish, Tar
Gently apply a commercial solvent and blot carefully to absorb all the spill. Then apply a mild detergent solution. Blot up excess again. Then wipe gently with a cloth soaked with water and blot dry.
Beer, Berries, Candy, Fruit Juices, Mixed Drinks, Soft Drinks
Apply a mild detergent solution. Blot to absorb the excess. Apply a small amount of vinegar and the detergent once again. Blot. Then wipe gently with a cloth soaked with water and blot dry. If none of the recommended steps work, you might wish to enlist the services of an expert. Be aware that do-it-yourself cleaning efforts might render the stain difficult for even an expert to remove.