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Gemini Janitorial Services was founded in 1984 by Janet Killian-Welte. At that time, she decided to focus on providing commercial... READ MORE

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You would not expect another office to settle for second rate commercial cleaning services if they had a choice, so why don't you... READ MORE

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Gemini prefers to work with new customers on a personal level and visit their site(s) before providing a cost of service quote. Please use the form below... READ MORE

"We CAN WORK FOR YOU. WE SERVICE any commercial BUSINESS,

including financial institutions, medical facilities, schools, office buildings and industrial institutions."

- Janet Killian-Welte,

President

Commercial Cleaning
ServicesSince 1984, Gemini Janitorial Services has been cleaning professional offices in the Greater Delaware Valley.

Schedule A Consultation

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Choosing the best cleaning services Wilmington DE has to offer will be one of the most important decisions you will make.

Keep The Spread of Flu Down In The Workspace
Cleaning services for your office goes behind delivering a great aesthetic for clients, and employees. Professional cleaning services keep workspaces safe. Did you know that…
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Post Construction Cleaning
Post construction cleaning services is the finishing touch for any construction project. Construction can generate a big mess even after the debris is removed. Cleaning…
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Local Commercial Cleaning Service Can Help You Reduce Sick Day Costs
Experienced local commercial cleaning service helps to keep your commercial property clean and healthy. There are over 21,000 germs on every square inch on keyboards,…
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We are proud to service the following organizations and businesses. Read More Here

I just wanted to take a minute to let you know how pleased we have been with Graciella's performance. She is a tireless worker, and keeps Denbigh...
Denbigh Hall

We have made everyone go to the kitchen to see what a wonderful job Domingo, Dulce, Inez, and Antonio did!!! What a great crew! If we do...
Lolly Gross

We proudly support:

Ministry of Caring
www.ministryofcaring.org
Janet Killian, founder of Gemini Janitorial Services, proudly serves as President of the Guild for the Ministry of Caring. The Ministry of Caring is a community-based nonprofit organization that provides a network of social, health and support services for those living in poverty, including the homeless and working poor, in the greater Wilmington, Delaware area.