Which Method Cleans Best ?
Dry foam: The carpet cleaner applies shampoo to your carpet, allows it to dry, and then,without rinsing, sucks the dried shampoo into a vacuum. Can you imagine applyingshampoo to you hair, allowing it to dry and then removing the shampoo from your headwith a vacuum? This method leaves a dirt residue in your carpet, which is one reason dryfoam is not too effective.
Absorbent pad (bonnet cleaning): This method is similar to dry foam, except the company
sets a large cotton bonnet on your carpet. The rotating motion causes the bonnet to absorb
dirt from your carpet. Bonnet cleaning is like trying to use a large cotton towel or mop to
rub the dirt out of your carpet. Hot water extraction for residential carpet would be a better
option and in some cases the rotary equipment could void carpet warranties. Method used more often in commercial settings for cost effectiveness and low noise requirements.
Dry, absorbent powder: The dry-compound method spreads a moist, absorbent powder
through the carpet. The powder is allowed to dry and then sucked into a vacuum. this
method leaves dry sponge particles at the base of the carpet yarn. And because the carpet is
not rinsed, this method is not very effective for residential cleaning. There are situations
where this method is an alternative where a water based cleaning isn't an option.
Hot Water Extraction: This is a fancy way of saying that a hot water cleaning solution
under high pressure is forced into your carpet and then sucked out of your carpet.
In a recent Technical Bulletin, Shaw Industries, the world's largest carpet manufacturer,
"recommends the hot water extraction system which research indicates provides the best
capability for cleaning."
You can choose form two different types: Truck-mount extraction, which is done with a
large machine mounted in a truck or van. Or portable extraction, which is done with a
small, hand-held unit.
On which type to choose, Shaw's Technical Bulletin states: "[cleaning] can be done from a
truck mounted unit outside the facility with only the hose and wand brought inside, or
where a truck mounted unit cannot reach, by a portable, self-contained system brought into
As you can see, Shaw recommends the truck mounted unit first. And this isn't surprising.
You see, the truck mounted unit cleans much better because it heats the water to a higher
temperature -- and shoots the cleaning solution into the carpet at higher pressure. This
breaks up the dirt, bacteria, chemicals, and pollens in the carpet. Then the machine uses
high suction to draw the dirt and chemicals out of your carpet. This is the method our
No question, the most effective way to clean carpeting is with a hot-water unit mounted in a
truck. It's the most powerful cleaning machine on the market and the only machine that
cleans your carpet of dirt, harmful bacteria, fungus, chemicals, pollens, and tobacco residue.
Some people believe that hot water damages your carpet, but this isn't true. By washing and
then rinsing your carpet with hot water, we clean your carpet completely -- in the same
way that the person who showers and then rinses off the dirt and soap will be much cleaner
than the person who takes only a sponge bath.