What do you mean by sending bills?

Burt's Bee's bill is one of the hard advertising promotion methods in the real estate industry, and it needs to communicate with people at work. Because of this part-time job, it sends out leaflets and publicizes real estate information in the street, just like the little bees in nature. Now it is not limited to the real estate industry. Anyone who is engaged in distributing leaflets and looking for prospective customers on the street can be called Bee. Generally, bees are part-time, which has both billing and sales functions. Hiring bees is a common form of business activities.