MACBOOK PRO on 2009 mid yosemite

App DOES in fact work and clear things out … WAY WAY faster than the usual EMPTY TRASH
IN fact, it was quite slow emptying my trash since the upgrade to yosemite!
I will install some more memory soon but in the mewantime this app does work great by clearing out memory and moving the speed up a bit.

joy zeal about HD Cleaner - Free up Disk Space on your Hard Drive