Removing gum from concrete...How to? Who does it? Los Angeles area.?

The courtyard of an apartment building I own has lots of old chewing gum blobs stuck to the concrete. It looks awful. Now that the landscaping and paint is complete, the gum stains are all I see when I look at the concrete. I have been looking online for companies who clean gum from concrete, and I came upon a company called Revorvrx based in Agoura, but I can't find any listing for this company....only an article about small businesses that describes what they do. They use a European machine called GumBusters, I think, which has low water usage, a contained non-hazardous solvent, and heat to dissolve the gum. They can rent the machine, sell the machine, or come remove gum for property owners. Does anyone know how I can find this company or one like it in the Los Angeles/San Fernando Valley area? Or is there anyone who has experience with removing gum from concrete that could tell me how to do it myself? I do not want to do high pressure power washing.

Answers:
Gum removal
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