Trusted Cleaners in Wilmington, DE Since 1984

Professional janitorial services for offices, medical facilities, schools, and industrial institutions — dependable, detail-oriented, and responsive.

About us

Trusted Janitorial Services in Wilmington, DE for Over 40 Years

Founded in 1984 by Janet Killian-Welte, Gemini Janitorial Services has built a reputation for dependable commercial cleaning in Wilmington, DE and the Greater Delaware Valley. Our team works with businesses of all sizes, including financial institutions, medical facilities, schools, office buildings, and industrial organizations.

Our Services

Professional Cleaning Services in Wilmington, DE

Commercial Cleaning

Reliable daily and weekly cleaning for offices, schools, banks, and medical facilities.

Post-Construction Clean-Up

pecialized construction site cleanup to keep projects move-in ready.

Emergency Cleaning

Fast response for unexpected messes and urgent cleaning needs.

Why Choose Gemini

Why Businesses Across Wilmington Choose Gemini Janitorial

Testimonials

What Our Clients Say

    
 
 
       Posted on Google  
   
   Denbigh Hall 
 
 
 
 Trustindex verifies that the original source of the review is Google. 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.
  
 
      Posted on Google  
   
   Allison Schafferman 
 
 
 
 Trustindex verifies that the original source of the review is Google. Gemini Janitorial is dependable and consistently does a great job!
  
 
      Posted on Google  
   
   Pat Forester 
 
 
 
 Trustindex verifies that the original source of the review is Google. An established business that has been making office shine since 1984. Put them on your team.

Blogs

Cleaning Tips & Resources

5 Questions to Ask a Janitorial Cleaning Company

Make sure you choose the right cleaning partner by asking these key questions before hiring.

3 Reasons You Need to Keep Your Office Phones Clean

Benefits of Professional Construction Clean-Up

FAQ’s

Frequently Asked Questions

What types of facilities do you clean?

We provide professional janitorial services for a wide range of facilities, including offices, medical centers, schools, banks, industrial institutions, and post-construction sites. With over 40 years of experience, our team is trusted by businesses of all sizes across Wilmington, DE and the Greater Delaware Valley.

Do you offer post-construction clean-up?

Yes, we specialize in professional construction site clean-up to ensure your new or renovated space is safe, spotless, and move-in ready. Our team removes dust, debris, and leftover materials, while thoroughly cleaning floors, windows, restrooms, and common areas. Whether it’s a small remodel or a large commercial project, Gemini Janitorial Services delivers detailed post-construction cleaning in Wilmington, DE and the surrounding areas.

How can I get a quote?

Getting a quote is simple. Just schedule a free consultation through our website or give us a call at (302) 654-5310. We’ll discuss your cleaning needs and provide a personalized plan tailored to your facility.

Service Area

Proudly Serving Wilmington, DE & the Greater Delaware Valley

Gemini Janitorial Services provides professional cleaning throughout Wilmington, New Castle County, Newark, Bear, and surrounding Delaware communities.