Frequently Asked Questions — Colorado Choice Carpet Cleaning

Hot water extraction — the method the IICRC designates as the preferred carpet cleaning method in the S100 standard. Hot water at 200–230°F is injected into carpet fiber under pressure and simultaneously extracted with dissolved contamination, bacteria, allergens, and cleaning solution residue. Up to 95% soil and bacteria removal per IICRC S100. We use a low-residue formulation — no sticky film left in the fiber after cleaning. Sticky residue left by high-detergent cleaning methods causes rapid re-soiling because new soil adheres to the residue. Low-residue extraction produces results that stay visible longer because the fiber has no residue attracting new contamination.

They are often used interchangeably in marketing, but they are technically different. True steam cleaning applies steam vapor — hot but lower in liquid water volume. Hot water extraction injects hot water at 200–230°F under pressure and simultaneously extracts it. Hot water extraction removes significantly more contamination from fiber depth than steam alone because the extraction component pulls dissolved soil out of the fiber rather than pushing it through. We use hot water extraction — not steam — on carpet. We do not use steam on hardwood, LVT, or tile because steam heat and moisture penetrates seams and causes damage on those surfaces.

Two to four hours under passive airflow in most Front Range homes. Colorado's low ambient humidity at elevation — 5,280 feet in Denver, 6,224 feet in Castle Rock, up to 6,800 feet in Castle Pines — produces faster post-extraction drying than more humid lower-elevation states. Running ceiling fans on high, opening windows, or using portable fans reduces drying to one to two hours in most Front Range conditions. Castle Pines and Monument at highest elevation experience the fastest drying in our service area. We use a low-residue formulation that reduces moisture volume in the fiber compared to high-detergent methods — which also reduces drying time.

Every 12 months for average Front Range households — shorter than the national 18-month recommendation because Douglas County red clay, Denver Basin hard water mineral deposits, and October through April road treatment chemical tracking accelerate carpet soil accumulation beyond what standard national guidance accounts for. Pet households — every 6 months. Allergy or asthma households — every 6 months. Wool carpet — annually with wool-specific protocol confirmed before scheduling. Rental property carpet — between every tenancy. High-traffic entry and hallway carpet in homes adjacent to open space or outdoor access — every 6 to 12 months regardless of interior cleaning frequency.

Yes. We use pet and child-safe chemistry on every residential job — no toxic residue, no harsh chemical off-gassing after cleaning. We recommend keeping children and pets off the carpet until it is fully dry — one to four hours depending on elevation and airflow conditions. Enzyme pre-treatment used for pet urine is non-toxic after application and extraction. Post-extraction carpet is safe for pet and child contact on full drying. If you have specific sensitivity concerns — fragrance-free chemistry required, specific product sheets needed — tell us on the call and we accommodate.

Not all stains — and we tell you which ones before we charge for the attempt. High removal success: pet urine with enzyme pre-treatment, tannin stains (coffee, tea, wine) treated same-day, protein stains treated with cool water enzyme chemistry, general soil and mineral deposits. Limited or no removal: bleach damage (dye destruction — not a stain, not cleanable), set stains treated with multiple consumer products before professional treatment (chemistry alteration affects removability), very old unknown stains on older fiber approaching end-of-life. We pre-test before treating any stain with a difficult removal history and communicate expected outcome before charging.

Uric acid crystals from pet urine in carpet backing and padding reactivate under forced-air heat every October through April. The crystals are stable in cool summer air — they become chemically active under sustained warm forced-air heating conditions, releasing ammonia-based odor compounds throughout the heating season. Standard carpet cleaning does not dissolve uric acid crystals — it cleans around them. Consumer masking agents suppress the smell temporarily — the source remains and October reactivates it again next year. Enzyme pre-treatment at professional concentration breaks uric acid down at the molecular level. No crystals remaining means no October reactivation next year. If the odor has returned for multiple heating seasons, the uric acid source is established at depth and may require restoration treatment including padding replacement and sub-floor sealing.

Topical enzyme treatment — applied to carpet fiber, backing, and padding surface. Appropriate for single or recent incidents where urine has not penetrated repeatedly through backing into padding at depth. Enzyme pre-treatment applied at professional concentration, dwelled appropriately, extracted with sub-surface tool. Restoration treatment — required when chronic contamination has saturated through the full padding thickness into the sub-floor. Carpet is pulled back, saturated padding is removed and discarded, sub-floor is treated with penetrating enzymatic sealer, new padding is installed, carpet is reinstalled, and a full cleaning pass is completed over the treated area. We assess contamination depth with UV light and physical inspection on arrival before confirming treatment level and cost.

Yes — with wool-specific protocol confirmed before any chemistry is applied. Wool is the most chemically sensitive common carpet fiber. Standard alkaline pre-spray chemistry used on nylon and polyester causes permanent fiber damage, color alteration, and shrinkage on wool. pH-neutral chemistry only for wool, with moisture-controlled extraction to prevent shrinkage. We confirm fiber type before treatment on every service call where wool is indicated — Castle Pines Village, Carriage Club, Heritage Eagle Bend, Ken Caryl, Bow Mar, and Heritage Hills are the communities where we most frequently encounter wool carpet in our service area. Wool carpet receiving standard alkaline pre-spray is the most consistent professional cleaning mistake we see in Douglas County premium communities.