You can actually buy a tool to clean wiper blades. It’s not going to recondition them like new but as soon as mine start farting or sticking I wipe the tool down them a couple of times and then forget to buy new ones for a few months and repeat. It was only 10-15 buck off Wish or AliExpress. Its plastic with bits of sandpaper cut down and on angles. Won’t fix hardened rubber or anything but can be done a lot of times.
A link to a similar product
AU $13.89 35% Off | Baseus Car Wiper Blade Repair Universal Auto Windshield Wiper Refurbish Tool Car Windshield Wiper Blade Repair
https://a.aliexpress.com/_mOJsBHo
I guess plastic doesn’t last long enough and they’ve changed them to metal to charge more for them. But should work the same