Iowa Code § 99.7: Writ — how served.

The restraining order may be served by handing to and leaving a copy of said order with any person in charge of said property or residing in the premises or apartment wherein the same is situated, or by posting a copy thereof in a conspicuous place at or upon one or more of the principal doors or entrances to such premises or apartment where such nuisance is alleged to be maintained, or by both such delivery and posting.