Business Details
42 Years
experience
Emergency
services
Commercial Cleaning Experts in Wilmington, DE
Established in 1984, Gemini Janitorial Services Janitorial Services has dedicated itself to providing comprehensive commercial and industrial cleaning solutions across the Greater Delaware Valley. Our founder, Janet Killian-Welte, transitioned from residential to commercial cleaning, building a reputation for reliability and quality through personalized client relationships. We specialize in construction clean-up, routine maintenance, and environmentally friendly product offerings, prioritizing tailored service assessments to meet specific client needs. Backed by decades of industry experience, we guarantee rapid response to emergencies and adaptability to evolving project requirements. Our clientele ranges from financial institutions and medical facilities to schools and industrial complexes, all benefiting from our meticulous attention to detail.As a 100% women-owned enterprise certified by the Women's Business Enterprise National Council, we combine ethical business practices with technical expertise. Our commitment to using advanced cleaning methodologies ensures spaces are not only visually pristine but also hygienically maintained, with documented effectiveness against surface-level bacteria. We maintain transparency in operations, offering site visits before service commencement to establish customized cleaning schedules and budgets. Celebrating over 35 years in business, we continue to uphold the standards that have made us a trusted name in the janitorial industry.
Services
Commercial Cleaning
Construction Clean-Up
Post Construction Cleaning
Environmental Products
Office Cleaning
Facility Maintenance
Surface Sanitization
Details
- Year established: 1984
Highlights and features
- We bring over 35 years of commercial cleaning expertise to every project.
- Our team conducts personalized site visits before service initiation.
- We utilize environmentally friendly cleaning supplies and methods.
- Our 24/7 emergency response ensures prompt resolution of urgent issues.
- We are a certified 100% women-owned business.
Associations and certifications
- Women's Business Enterprise National Council
What people say
Thorough construction clean-up
Personalized service approach
Reliable emergency response
Eco-friendly product options
Long-term client relationships
Services
Commercial Cleaning
Our commercial cleaning service maintains professional environments through daily/weekly disinfection routines, surface sanitization, and waste management. Specialists handle high-touch areas like phones, keyboards, and restrooms to reduce bacterial spread. Clients in medical facilities, financial institutions, and corporate offices benefit from enhanced workplace morale, reduced sick days, and improved brand perception through consistently maintained spaces.
Construction Clean-Up
This service removes construction debris, dust, and residue from renovation or new-build projects. Technicians use HEPA filters, industrial vacuums, and specialized tools to clean ceilings, vents, windowsills, and flooring. Ideal for contractors seeking tenant-ready spaces, we ensure surfaces meet occupancy standards while preserving material integrity through appropriate cleaning agents.
Environmental Products
We supply and utilize EPA-registered, low-VOC cleaning products that minimize environmental impact without compromising effectiveness. These solutions safely clean surfaces while improving indoor air quality for occupants. Businesses seeking LEED certification or aiming to reduce chemical exposure benefit from our certified green alternatives across all cleaning operations.
Facility Maintenance
Regular maintenance includes floor care (waxing/buffing), fixture dusting, glass cleaning, and restroom sanitation. Our teams adapt schedules to client operations, minimizing disruption while maintaining consistent hygiene standards. Industrial facilities and schools maintain professional appearances and regulatory compliance through documented cleaning protocols and service verification.
Emergency Response
Our rapid-response team addresses spills, floods, or contamination incidents within 24 hours. Specialized equipment like extractors and dehumidifiers restore spaces while preventing secondary damage. Medical offices and industrial clients maintain operational continuity through our certified technicians' ability to handle biohazardous materials and critical sanitation breaches.
People
Janet Killian-Welte
President and CEO
Founder of Gemini Janitorial Services Janitorial Services with over 35 years in commercial cleaning. Certified 100% women-owned business leader through WBENC. Active in CIRC/DE and Committee of 100. Recognized as 2014 Entrepreneurial Woman of the Year by New Castle County Chamber of Commerce.
Michelle Segarra
Administration
Coordinates operational logistics and client communications as key administrative contact. Ensures compliance with service agreements and manages day-to-day business functions to support service delivery continuity.
Pat Forester
Marketing Coordinator
Manages brand visibility through digital outreach and client engagement strategies. Maintains marketing materials while representing Gemini Janitorial Services Janitorial Services at industry events to expand service awareness in the Delaware Valley region.
Questions
What commercial cleaning services do you offer?
We provide office sanitization, construction clean-up, floor maintenance, restroom sanitation, and eco-friendly supply distribution tailored to medical, financial, and industrial sectors.
Are your cleaning products environmentally friendly?
Yes, we use EPA-registered, low-VOC products that meet green certification standards while maintaining effectiveness against bacteria and surface contaminants.
How do you handle emergency cleaning situations?
Our team responds within 24 hours to spills, floods, or contamination incidents using specialized equipment to restore safe operations with minimal disruption.
What areas do you serve?
We operate throughout the Greater Delaware Valley, including Wilmington, Newark, and surrounding commercial hubs for both local and regional clients.
How are cleaning quotes determined?
We conduct free site visits to assess space size, cleaning frequency needs, and special requirements before providing customized cost estimates.
Are you a certified women-owned business?
Yes, Gemini Janitorial Services Janitorial Services is 100% women-owned and certified by the Women's Business Enterprise National Council since our founding in 1984.
Reviews (1)
Denbigh Hall
Dec 17, 2019
Report
We've been clients of Gemini Janitorial for more than four years, and we are delighted with their service. Graciella is a joy to work with and she makes our building sparkle. I can't recommend them highly enough.
