About Cleaning Laboratory
From Ukrainian Teacher to NYC's 25,000+ Cleaning Success Story
How 15 Years of Teaching Experience Built NYC's Most Systematic Cleaning Service
In 2009, Oksana Korpos arrived in New York from Ukraine with two university degrees, nine years of teaching experience, and zero connections. Cleaning became survival. Today, that survival story has transformed into 25,000+ completed cleanings, 25 trained professionals, and 102 five-star reviews — not a single rating below 5.0. We’re not just another NYC cleaning service; we’re a pedagogical approach to precision, built on systematic training, documented processes, and $1,000,000 in liability insurance.
- 13-Step Quality Control: Every cleaning follows our documented checklist — 98% pass rate on first inspection
- HEPA-Certified & Eco-Safe: Seventh Generation, Method, Bon Ami products only — safe for kids, pets, allergies
- 25 Background-Checked Professionals: Each completes 40-hour training + “day and night” simulation
- 3-10 Minute Response Time: Real-time CRM tracking, WhatsApp updates throughout service
The Numbers That Define Our 15-Year Journey
Since 2009, we’ve documented every aspect of our growth:
- 25,000+ cleanings completed (averaging 160/month initially, now 300-350)
- 80% client retention rate — 8 out of 10 clients book us regularly
- 102 Google/Yelp reviews — every single one is 5 stars
- $1,000,000 insurance with A++ Superior rating
- Average team experience: 5 years with Cleaning Laboratory
Our founder Oksana Korpos personally oversees training. Her teaching background shapes everything: written protocols, systematic verification, continuous education. We don’t control — we teach. The result? A team where former engineers, teachers, and managers from Eastern Europe bring their expertise to every NYC home.
The Founder's Journey
From Survival to System: Oksana Korpos’s NYC Story
Founder & CEO | LinkedIn Education: Two degrees from Ukrainian universities Background: 9 years teaching experience
‘I didn’t plan to start a cleaning company. In 2009, I arrived in New York with teaching credentials that meant nothing here. No investments, no connections, no capital. Cleaning was the only door open.
But I approached it differently. Where others saw manual labor, I saw systems. Where others managed with control, I built with education. Every process we use today — from our 13-step quality control to our 40-hour training program — comes from my classroom experience.
We’ve completed over 25,000 cleanings now. Not because we’re the biggest or cheapest, but because we treat both clients and cleaners with respect. This is our method: precision without pressure, standards without shortcuts.’
- 2009: Started alone, first client in Brooklyn
- 2011: First employee hired and trained
- 2014: Reached 10 employees, implemented checklist system
- 2017: Expanded to all NYC boroughs
- 2022: Crossed 20,000 cleanings milestone
- 2024: 3,963 cleanings completed
- 2025: 25 employees, 300-350 monthly clients”
Our Team Excellence
Team Composition:
- Total staff: 25 verified cleaning professionals
- Average experience: 5 years with Cleaning Laboratory
- Languages: English + Ukrainian, Russian, Polish, Spanish
- Background checks: 100% verified through system
Professional Development:
- Initial training: 40 hours minimum
- Simulation period: “Day and night” practice runs
- Monthly workshops: New techniques and safety updates
- Quality verification: Regular performance reviews
Team Background:
- Former teachers: 6 team members
- Engineering backgrounds: 4 team members
- Business/management experience: 5 team members
- Hospitality professionals: 10 team members
Recognition & Memberships:
- Member: International Association of Professional Cleaning Business Owners
- Partner: Cleaning for a Reason (free cleaning for cancer patients)
- Insurance: $1,000,000 liability with A++ rating”
From Request to Satisfaction - Our Documented Process
- Client Contact — Response within 3-10 minutes
- Needs Assessment — Customer Care determines scope, special requirements
- Availability Check — Internal system verifies exact time slot
- Agreement — Date, time, price confirmed (no hidden fees)
- Service Confirmation — Type selected (Basic/Deep/First-Time/Office)
Profile Creation — CRM logs preferences, access details, expectations
Team Assignment — Matched based on location, expertise, client needs
Pre-Arrival Notice — 24-hour and 30-minute notifications
- On-Site Introduction — Cleaner meets client, clarifies priority areas
- Systematic Cleaning — 60-point checklist execution
- Quality Verification — Self-check against standards
- Client Walkthrough — Demonstrate completed work
Technology Supporting Our Process:
- Google Calendar for scheduling
- CRM for client profiles and history
- WhatsApp for real-time communication
- Digital checklists for consistency
- Photo documentation when requested”
Frequently Asked Questions About Cleaning Laboratory
Cleaning Laboratory was founded in 2009 by Oksana Korpos, a Ukrainian educator with two university degrees and nine years of teaching experience. She started the company out of necessity after arriving in New York with no connections or capital. Her pedagogical background shaped our systematic approach — we apply teaching principles to cleaning, focusing on training, documentation, and continuous improvement.
Since 2009, we’ve completed over 25,000 cleanings across NYC. Currently, we handle 300-350 cleanings per month, serving all five boroughs including Manhattan (with COI requirements), Brooklyn, Queens, Bronx, and Staten Island.
Our 25-person team is unique: many have higher education backgrounds including teaching, engineering, and management. Every cleaner undergoes 40 hours of initial training plus a “day and night” simulation period before working independently. Average team experience with us is 5 years, and all staff are background-checked and reference-verified.
We maintain a 98% first-time pass rate through our 13-step quality control process. Every cleaning follows a 60-point checklist. We offer a 24-hour satisfaction guarantee and operate on a “work first, pay after” basis — you only pay after approving the completed cleaning.
Yes, we carry $1,000,000 in liability insurance with an A++ Superior rating. We’re members of the International Association of Professional Cleaning Business Owners (IAPCBO) and partners with Cleaning for a Reason, providing free cleaning for cancer patients.
We exclusively use eco-friendly, non-toxic products safe for children, pets, and people with allergies:
- Seventh Generation Disinfecting Multi-Surface Cleaner (Thymol-based)
- Method Glass + Surface Cleaner (ammonia-free)
- Bon Ami Powder Cleanser (chlorine-free)
- HEPA filtration vacuums (captures 99.97% of particles)
Through systematic processes: CRM tracking of client preferences, Google Calendar scheduling, real-time WhatsApp communication, and regular performance reviews. Our founder Oksana Korpos personally oversees training standards, applying her teaching experience to ensure consistency.
We have 100+ reviews on Google Maps and Yelp with a perfect 5.0 rating — not a single review below five stars. Our client retention rate exceeds 80%, meaning 8 out of 10 clients book us regularly (weekly, bi-weekly, or monthly).
Yes, we offer specialized services including post-renovation cleaning, office cleaning, move-in/out, and through our Cleaning for a Reason partnership, free cleaning for cancer patients. We also provide additional services like laundry ($30), ironing ($35), and closet organization ($50).
Our Customer Care team responds within 3-10 minutes. We can often accommodate same-day or next-day requests depending on availability. Regular clients receive priority scheduling and can book their preferred time slots.