Steve Walker wrote:

Acquired a LOT of HO scale slot car track recently. The rails and end
connections are rusty, some very little, others, a lot. Need
recommendations on the best, non-abrasive way to remove this, without
damaging the styrene track itself. Preferably non-toxic.

Try Evap-o-rust found at autozone. It seems rather benign. My boss found a use for it
removing flash rust on our ground shafts.

Wes