Hey Michael Lu! Uh no I actually haven't. The only problem is that the little cardboard fiber covers that protect the end of where the lights lock in peel up from the excessive humidity and reveal the terminal contacts. But other than that, not really a terrible rust problem either. The lights don't get the brunt of the sprinklers watering radii. THanks for asking though...would be nice to get those waterproof fixtures but I don't think paying over $100 for just a gasket sealed diffuser is really worth it.