The commissioner or director may order any person or the agent or employee of any licensee or registrant or person, to cease operation of any equipment or facility which he finds unsuitable, or which he finds being operated in any of the following ways:
(a) By an incompetent or unqualified person.
(b) In violation of this division or Division 7 (commencing with Section 12501) relating to pesticides or any regulation issued thereunder or any regulation of the commissioner.
(c) In a manner or under conditions which may interfere with proper control of the pest for which treatment is applied.
(d) In a manner or under conditions which may cause injury, illness, or adverse effects to persons or animals, or cause damage to crops or property being treated, or to crops or property of others.