I live and work on an acreage, with gardens and woodlot. My leather work gloves work for a living. I burn them up over time. Shelf queens need not apply.

Granted, they aren't $30 rodeo cowboy gloves.

Individually, they get washed in a sink of warm water with a drop of dish soap. Collectively, as I change seasons from non-insulated to insulated work gloves, they get tossed in the washing machine with dirty coveralls and hats and felt boot liners.

Washing is no problem. The critical thing is how you dry them. I lay them out to air dry, but when they are 60% dry it's important to put them on and stretch them so you don't end up with smaller gloves that don't fit well. It's not a permanent shrink of course; you can get them wet and stretch them out any time. But it's easier to manage proactively, so you're good to go next season.

PS, for otherwise good gloves that have a couple of small holes, putting that finger over a rake handle and giving a few wraps of the good ol' Canadian hockey tape adds years to their useful life. Waste not!