Ariz. Rev. Stat. § 29-101
If a person transacts business as a merchant or trader, using the word agent, factor, company, co., or words of like significance or import, and fails to disclose the name of other persons interested in the business by a sign in letters easy to read placed conspicuously at the place where the business is transacted, or if a person transacts business in his own name, without using the word agent, factor, company, co., or words of like significance or import, all the property, stock, money and choses in action used or acquired in the business, except property which is exempt from execution shall, as to the creditors of such person, be liable for his debts, and shall in all respects be treated in favor of his creditors as his property.
A.R.S. § 29-101