Confidentiality agreements, non-disclosure agreements, NDAs, business protection agreements – no matter what you call them, they're an essential part of a company's internal and external contractual structure.
There is no good reason for your business not to use an NDA, and a number of good reasons why you should have at least one NDA template in your corporate toolbox. Many companies have several Non-Disclosure Agreements – one for employees, one for outside contractors, one for suppliers, etc...