I do use an image dump folder. I always save in it all the images I want to post on the Tumblr or elsewhere, so they don’t end into my main download folder. This folder gets pretty cluttered and needs to be cleaned up every once in awhile. One way to do this is using Hazel/Belvedere, but I like to keep it simple.
This is my simple solution to this problem: it is supposed to search all the files in a folder, and delete all the ones that are older than a certain date.
Select method defaults to jpg because of the use I’m gonna do of it, but you could easily use it for something else.
[This thing uses active support dates because it was waay easier to do it that way.]