I own a 120GB SSD.
After running a lot of tools from the bleeping computer forum.
My windows directory use to be 24.6GB (WinDirStat)
Now it is 27.3GB (2.7GB more)
See the Pic:
What's taking up the extra space?
I have been tracking the ssd size since 6/3/14
On the 1/10/14 I used the CleanUp Tool - 57.1GB Free (see chart).
From the chart you can see I lost a lot of SSD space within a few days of using the cleanup tool.