Clothing Steam Cleaners What Is Dry Cleaning??? How Is It Done????

What is Dry cleaning??? How is it done???? - clothing steam cleaners

Her clothes are well washed and dry cleaned?
Spray is what?
Or
The steam is what?

I took my coat, she had to some years ago and a few crumbs embedded in the neck
...
When I came back from cleaning the crumbs were still there, but the skin felt like I was in the shop, as they had done something to provoke
not cleaned, I really do not know why other than they no indications that were not cleaned and had felt

How to Clean?