cruzer spark losing memory

This one is a 32GB drive.  Every time I use it , it eats up some memory space.  I’m down to about 10GB now.   So I’ve moved all the files to trash but the memory doesn’t increase. What’s going on?

Are you using a PC or Mac? If using a Mac, you must empty your Trash while the drive is connected, or the files won’t be deleted. Only the path to them will be removed. Hence you think you’ve deleted the files but in actuality you haven’t.

I think Tapeworm’s answer applies to Windows systems also.  Another thing to try is to run a CHKDSK command on the drive.