The following solicitors, canvassers and peddlers are exempt from the payment of fees required by Section 850.04:
(a) Those engaged in interstate commerce;
(b) Those selling only products produced, grown or manufactured by their own labor, but such exemption shall not apply to makers of baked goods;
(c) Those representing retail or wholesale establishments which have engaged in business in the City three months or longer;
(d) Those representing charitable or nonprofit organizations;
(e) Those soliciting signatures on petitions for causes, both public and private; and
(f) Those distributing handbills, advertising or other informational material not otherwise prohibited by ordinance or State or Federal law.