Is removing stains fron a carpet hard?

It would depend on the stain and how fast you can get to it. The faster you attend to a stain, the more likely you'll get it out. Also, each stain requires different stain removal processes... NO CLEANING PRODUCT is effective to ALL TYPES of stains.

Example is blood on carpet, you cannot use hot water otherwise you'll be setting the blood into the carpet.

Another example is grease stain, you need to use isopropyl alcohol first to remove the oils.

Important thing is not to rub the stain as it will just spread the stain.

Another Answer:

The difficulty in removing stains is subject dependant on the type of stain and how fast you can get to it. The faster you attend to a stain, the more likely you'll get it out. Also, each stain requires different stain removal processes... NO CLEANING PRODUCT is effective for ALL TYPES of stains. For example, if you try to remove a blood stain from carpet, you must use cold water otherwise you'll set the stain. Conversely, if you try to remove grease from carpet, heat is required in the stain removal process but your best to treat the stain first with isopropyl alcohol.

The simple rules when removing stains are:

1) Act quickly and remove as much of the excess as you can

2) Blot the stain with a clean white towel or paper cloth until there is no further transfer of the stain to the cloth

3) I recommend finding some professional stain removal instructions from here on. If you can't access any stain removal instructions, then sponge with half a litre of luke warm water and a few drops of dishwashing detergent. Blot with a clean cloth. Rinse by sponging on clean water and blot again, putting as much weight on the stain as possible for maximum absorption.