There are many kinds of residue.
Coffee stain carpet keeps coming back.
When you clean the stain you are cleaning the surface of the carpet.
You can then vacuum the salt out and clean the carpet with a carpet cleaner.
The coffee has soaked through the fabric and is embedded in the floor beneath it.
Another potential cause of a carpet stain coming back is residue that has been left in the carpet.
When the carpets dry the stain comes right back to the top.
Do not scrub the area.
Here are the best diy ways to deal with residue and trapped moisture.
With some persistence yes.
Another thing that you can use is lemon.
Do a patch test first since vinegar sometimes causes slight discoloration.
For example a low cost low quality carpet cleaning company may only rinse the carpet with water leaving behind a soapy residue that attracts soil.
Dealing with stain that keeps coming back can be frustrating and discouraging.
Wicking typically occurs when the carpet is wet.
When the remaining carpet cleaner is left to stew in your carpet it will begin to attract dirt debris and soil in the same spot making it appear like the same stain is coming back time and time again.
Vigorous scrubbing could damage your carpet or upholstery.
Wicking is the result of a stain reaching deep into the carpet and soaking into the carpet backing and sometimes even the pad underneath the carpet.
The leftover residue becomes sticky over time.
Lemon is extremely helpful if you are out and accidentally spilled coffee on your shirt for instance.
Extra solution left to hang out on carpet fibers will attract dirt and soil to the very spot you just cleaned causing it to become soiled once again.
This sticky soap attracts more dirt and grime which cause the stain to reappear.
For residue spray just enough warm water over the stained area to dampen it but without wetting the back of the carpet.
Wicking is another cause of a reappearing stain.
Now dry the are using the same white towel technique mentioned above.
Using a white cloth or towel depending on the size of the stain gently rub the area back and forth or in a circular motion so the water based cleaning mixture covers the entire stain.
Due to the inefficiency of the steam cleaner sometimes the stain simply gets moved around or pushed deeper into the carpet rather than picked up.
Wicking this is when the carpet stain has soaked through to the backing of the carpet.
Apply some diluted white vinegar and dish soap directly onto the stain.
First off you should spritz a bit of cold water on the stain then apply salt on it.
This is common when carpets are steam cleaned.