A few remedies come to mind...
1. A product called "Rust Converter" is available at the big DIY stores that you brush on and it chemically alters the rust to a sandable, paintable surface. The rust no longer continues. I've used it very successfully on wheelbarrows, etc.
2. A rotary tool or drill with a steel brush attachment makes pretty short work of grinding off rust. Minimal rust will come off with a sander and oxide paper.
3. Those steel scrubby pads that are sold for cleaning up kitchen pots work well on cleaning up mildly rusted stuff. I even use them to easily scrub off wax and propolis before I repaint equipment. With care, you can even use them to clean up plastic equipment very quickly. They are my new secret weapon.
Buy locally, buy only humanely raised animals, eat in season, keep bees!