I'm concerned that my bromeliads will provide places for mosquitos to
breed. Does anyone have any ideas about how to handle this?

I have purchased dunks, but using them for bromeliads isn't very
convenient, and I think it might not be effective, either.

I saw a product that claims to reduce the surface tension of water so
that mosquitos can't land on the surface to lay their eggs, but I
think it would be too expensive to use for watering the bromeliads
regularly. It claims to be made of (unnamed) ordinary household
products. Does soap reduce surface tension? Maybe I could add small
amounts of soap or detergent to the water? Any ideas, anyone?

Ells