No, a file card is nearly useless and slightly destructive in my opinion.
I don't much use files on wood - I was referring to cleaning files used on metal as well.
You can clean single-cut files very efficiently using a block of hardwood - the action makes little grooves in the wood that match the file teeth and can push out most chips:
A folded-over piece of copper plumbing pipe or tubing works really well, too, used in the same way.
If you want your files to cut really well, follow this link to Boggs Tool, where they can be sharpened for a very low price:
https://boggstool.com
A well-kept secret business since 1932, they use a special high pressure steam/abrasive to blast the teeth and bring an old file to better-than-new sharpness. All you have to do is send a box of files with your name and contact info and a count of the number of files in the box. A while later, like magic, the brown truck appears at your shop with a box of renewed files and a bill for the service. Any that can't be sharpened effectively are not charged, and the cost of doing the "good" ones is shockingly low. Literally any size, shape or type of file goes through the process well, including nut, fret, and any other specialty files. even the reject free ones come back far in far better shape than they left!