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Success Stories

Elementary School in Houston, Texas Reduced Air Pollutants Including Mold By 76.2%

Paul Cagle
News, Success Stories

Indoor Air Quality Impact Study: Summary

This elementary school in a Texas ISD is a 98,000 sq ft public school with 48 classrooms, various common areas and an administrative area that contains the principal’s office and a clinic room.
Prior to this air quality study, school classrooms ranged from 28% up to to 104% of the recommended limit of human exposure to air pollution*.
Average was 61% of the recommended limit of exposure to air pollution, across nine benchmark locations in the school. This is considered to be a high or very high exposure to air pollutants, especially for children.
In the first 30 days of this study, air pollutants were reduced 76.2% overall.
And in the classroom where pollutants exceeded the recommended limit, the reduction was 92.3%: from 104% down to 2%.
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Table: Reduction in Air Pollutants in First 30 Days

School Building Indoor Air Quality Study Results

* The American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE), recommends an indoor maximum exposure limit of 0.05 milligrams of pollutant per cubic meter (Mg/m3) for an annual average exposure.


Indoor Air Quality Study and Results

The King’s conducted a 95-day study of particulate matter (PM) air pollutants measured as milligrams of pollutant per cubic meter (Mg/m3). Samples were taken on three sequential dates, at a consistent time-of-day and at the same nine (9) benchmark locations within the school facility.

Following the initial collection of air pollution samples on Day 1, The King’s Operation System (TKOS) was implemented. TKOS is a comprehensive management and operation system for large facility cleaning that produces a cleaner, healthier indoor environment, often at significant cost savings.

Average reduction in air pollutants across the nine benchmark locations was 76.2% after the first 30 days of implementing TKOS, with nominal change over the following 65 days.


Up to 30% of building occupants in the U.S. suffer from chronic respiratory disorders. Reducing air pollutants by 75% or more can improve quality of life at a cost savings.


TKOS Cleaning for Health Highlights

These are the key components of TKOS, Cleaning for Health, that were implemented in this Texas ISD elementary school.

Training Camp: Four custodians are assigned by the ISD to this school and they all attended a 2-day TKOS Training Camp the week prior to January 2, 2017. Each one achieved a Certified Cleaning Worker recognition diploma.

Team (Specialist) Cleaning: During the TKOS Training Camp, personnel were trained on the four (4) specialist cleaning process and were reassigned to specific duties (instead of areas). This transition from the typical “zone/area cleaning” to a team cleaning approach requires the 2-day training camp event to unlearn the old habits and adapt to a new, more effective system.

As specialists, the scope of duties are reduced for each team member and they are trained to perform fewer functions in a larger area of work. This specialization reduces errors and improves efficiency.

Standardized Materials: Specialists are provided standardized equipment and materials for the new system. Team members are provided a Distribution Tray for each shift and a Job Card for tracking their compliance.

Vacuum Filtration: The King’s implements a 4-level filter, back pack vacuum cleaning protocol. The HEPA-Filters are emptied several times daily according to work-loaded schedules and permanent filters are cleaned weekly.

Microfiber Mops and Cloths: Mopping and dusting are performed according to strict TKOS protocols: microfiber flat mops and double sided mop bucket systems are used along with dusting with microfiber cloths and duster covers. A clearly defined laundering program for color-coded microfiber cloths and mop heads is important for the efficacy of the program.

About TKOS Consulting

TKOS is a management control system that standardizes the cleaning operation that

  • eliminates waste and labor inconsistencies
  • reduces labor costs by 10% to 30%
  • reduces supply usage up to 30% and
  • most importantly, makes indoor environments healthier by reducing air pollutants up to 75%.

The King’s Operation System (TKOS) is delivered through a consulting partnership that helps clients implement these Five Pillars of Cleaning for Health into their facility cleaning departments:

I. Process: Clients implement a process that standardizes nearly every aspect of the custodial department.

II. Training: The training room is the heartbeat of the cleaning team. TKOS teaches the “why” and the “how” of cleaning, with tools and systems designed for the cleaning worker to successfully and confidently clean for health.

III. Health: “Effective cleaning is the most fundamental activity we can employ to create healthy conditions where modern society spends the vast majority of their lives.” ─ Dr. Michael Berry (founding member of the EPA)

IV. Data Driven: TKOS helps enable the management team to generate measurable results that improve the department and provide meaningful information to the stakeholders. “You can’t manage what you can’t measure.”

V. Leadership: Our leadership team partners with our client’s leadership team to implement TKOS. We work hand in hand with managers and supervisors training them how to be more effective leaders as they learn to manage the process.

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90-Day Pilot Up To 86% Air Quality Improvement

Paul Cagle
Best Practices, Success Stories

Case Study: Corporate campus with more than 250,000 sq. ft. Class A office space.

Facility: Campus located in the Houston region with five separate buildings and a total of 10 floors.

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Scientific Study: The original walk-through and indoor air quality (IAQ) test, conducted in March, measured the status of 0.3 micron levels of indoor air particulates. Multiple samples were taken measuring indoor air particulates with testing that is typically deployed in laboratories, clean rooms, pharmacies and hospitals.

Situation: Facility management was concerned about low air quality resulting from 0.3 micron airborne particulates, such as dust, dust mites, dust mite feces, dead skin cells, the H1N1 virus, fungal and mold spores, and many harmful bacteria, known to cause respiratory disorders in approximately 30% of the adult population.

Solution:  The King’s Operation System Pilot

A 90-day pilot of The King’s Operation System (TKOS) began in July and a progress audit was conducted in October. This 90-day pilot involved janitorial staff and supervisors who were graduates of The King’s Training Camp, and who implemented:

  • Cleaning and managing the filtration of our 4-level back pack vacuum system
  • Dusting with microfiber cloths and duster covers on special “wooly dusters”
  • Microfiber flat mops using a double-sided mop bucket system, and
  • Laundering cleaning cloths and mop heads frequently.

Results: The transition to The King’s Operation System was smooth, with benefits realized in the very first week. Over the 90-day pilot, these percentage improvements in parts-per-million of 0.3 micron particles were documented in lobbies and office areas of the five buildings on this campus:

Building 1: 71% to 78%

Building 2: 42% to 57%

Building 3: 84% to 86%

Building 4: 69%

Building 5: 86%

Download PDF for complete test results

Long-term benefits affect the overall real estate investment value. The life expectancy of building assets, such as carpet, hard floor surfaces, paint, computers, servers, etc. is increased.

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Church School Clean for Health

Paul Cagle
Best Practices, Success Stories

Case Study: Church educational wing and child care center.

Facility: Approximately 20,000 sq. ft. two-story education building on church property located in a residential community near Houston.

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Scientific Study: 75-day study on the status of 0.3 micron levels of indoor air particulates. The initial indoor air quality (IAQ) test was conducted in March 2013 and The King’s cleaning for health team began cleaning in April. Progress audit was conducted June 28. Testing equipment used was professional-grade, typical in laboratories, clean rooms, pharmacies, and hospitals. Multiple samples were taken.

After only 75 cleaning days, harmful air particulates down to 0.3 microns were reduced by 87% on the first floor and 88% on the second floor.

Situation: The health of children and their teaching staff is a high priority for church leaders and educators. This congregation was concerned about high levels of 0.3 micron airborne particulates, known to cause or exacerbate respiratory problems, especially among children. Examples of 0.3 micron airborne particulates include: dust, dust mites, dust mite feces, dead skin cells, the H1N1 virus, fungal and mold spores, and many harmful bacteria.

Solution: Over the 75-day period of this study, we implemented The King’s Operation System (TKOS) with particular emphasis on these strategies:

  • Cleaning staff were graduates of the TKOS Training Camp
  • Each cleaning team member was trained as a specialist and provided standardized equipment and materials for their area,
  • Managed filtration on our 4-level filter back pack vacuums,
  • Dusted with microfiber cloths and duster covers,
  • Mopped with microfiber flat mops and double sided mop bucket system, and
  • Laundered cleaning cloths and mop heads at specific frequencies.

Long-term benefits affect the overall real estate investment value. The life expectancy of building assets, such as carpet, hard floor surfaces, paint, computers, servers, etc. is increased.

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Major University Improved Air Quality While Slashing Costs

Paul Cagle
Best Practices, Success Stories

Case Study: Facility department of this university implemented a new cleaning process provided by The King’s, designed to clean for health and eliminate waste.

Facility: Large Midwestern university with more than 4.5 million cleanable square feet.

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Situation: Beginning September 2011, the facility department of this university began cleaning a large academic building with a new cleaning process provided by The King’s, designed to clean for health and eliminate waste. Primary goals were to (1) clean for health first and then appearance; and (2) to provide more service using less staff within the current funding level.

As of the initial measurement period, both goals were achieved. Test results indicated a significant improvement in indoor air quality (IAQ). Simultaneously, the FTE head count of janitorial staff was reduced by 25% from 160 to 120.

Scientific Study: The university environmental health and safety (EHS) department performed indoor air quality testing on five separate days during the second and third week of October 2011. The results of this baseline data were compared to results of the second testing of indoor air quality, which took place the last week of February 2012.

Comparative review of the data showed a significant reduction in airborne contaminants, including but not limited to dust, dust mites, dust mite feces, dead skin cells, fungal spores and mold spores. The reduction of 1.0 micron particles from October 2011 (43%) to March 2012 (24%) was 19%. The reduction of .3 micron particles from October 2011 (31%) to March 2012 (21 %) was 10%.

Results: The Cleaning for Health process improved indoor air quality by 19%. Simultaneously, the FTE head count of janitorial staff was reduced from 160 to 120, a 25% reduction for an estimated savings of more than $1.5 million to the university.

Considering that this new academic building opened in 2010, it is ideal to preserve the long-term value of this new property investment. However, the university believes that cleaning for health first has benefits regardless of the age or technical complexity of a building. The life expectancy of all building assets, such as carpet, hard floor surfaces, paint, computers, class room equipment, etc. is increased by cleaning for health.

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Medical Clinic Clean for Health

Paul Cagle
Best Practices, Success Stories

Indoor air pollutants reduced 31% in first 90 days

Case Study: Cleaning Medical Clinic Indoor Environment for Health.

Facility:  80,000 square foot medical office building in Houston, Texas.

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Scientific Study: 90-day study on the status of 0.3 micron levels of indoor air particulates, beginning June 1, 2009. Multiple air samples were taken with testing that is typically deployed in laboratories, clean rooms, pharmacies and hospitals.

Situation:  The facility management company was concerned about the presence of 0.3 micron airborne particulates, known to cause respiratory disorders among 30% of the adult population. Examples of 0.3 micron airborne particulates include: dust, dust mites, dust mite feces, dead skin cells, the H1N1 virus, fungal and mold spores, and many harmful bacteria.

Solution:  The King’s conducted a Training Camp for their janitorial staff and suprvisors, implementing:

  • four-stage vacuum filtration system
  • high-quality micro-fiber cloths and duster covers, with capacity to reduce cleaning solvents by 90 percent
  • double sided mop bucket system and clean, color-coded mop heads used and replaced nightly
  • germicidal detergent in restrooms/locker rooms, not just simple disinfectants, to deter the spread of infection and harmful pathogens.

Results: The transition to The King’s system was smooth, with benefits realized in the very first week. Over the first 90 days, a 31% reduction in 0.3 micron particles was documented.

Long-term benefits affect the overall real estate investment value. The life expectancy of building assets, such as carpet, hard floor surfaces, paint, computers, servers, etc. is increased.

Read more