A system (12) for repelling mosquitoes near a spa (11) (referred to herein as a "Zika Mist System" or "ZMS") includes a string of misting devices (14-23) interconnected in fluid communication for mounting on a spa tub structure in order to produce an insect-repelling, spa-water mist over the spa from chemically treated spa water taken from the spa. The ZMS includes a misting pump for delivering pressurized spa water from an outlet on the misting pump (40A) to the string of misting devices via an outlet line (42A) component of the ZMS； it also includes an input line (41A) for coupling an inlet of the misting pump in fluid communications with a water-holding portion of the spa, e.g., preferably doing so via a drain assembly on the spa. A mosquito-repelling spa includes a spa tub structure on which is mounted such a ZMS.
