I have some spider lilies that bloom in August. I would like to move or divide them. It interferes with their sensory apparatus, and they can't tell where people are. Marketers have told us that citrosa, which emits citronella oil, blocks the mosquito's radar device. On the other hand, scientists say citronella, if it works at all, has nothing to do with blocking radar.
Mosquitoes find the smell so irritating that it interrupts their feeding.
They just hover about until the repellent disperses, then they get back to biting. This bit of information may be enough for you to give the plants a try. As bad as mosquitoes are these days, anything's worth trying. Last week, while mosquitoes were literally biting me through my clothes, I saw parents at a baseball game hovering over citronella candles. I think I'll give that a try, too.