If you really have to install trash in your PC, use the combination of https://directorymonitor.com/ and http://p-nand-q.com/download/regdiff.html to keep track of where the program added files, and what registry keys it added or modified, so you can revert them. Source: over 2 years ago

I purchased a copy of Directory Monitor (directorymonitor.com). Source: over 2 years ago

You can use a program called Directory Monitor to pinpoint exactly where changes are being made on your computer. I use whenever I need to locate a save file for any game. You just start it up, make a save in the game, and it will show you where the file was created or modified. Source: almost 3 years ago

For my drives at work, I use Eraser. It'll let you wipe entire drives or just unallocated space. A single pass of all zeroes is sufficient (listed as British HMG IS5 (Baseline) (1 pass)" in the program. Source: 11 months ago

If you're really paranoid, try something like https://eraser.heidi.ie/ to delete any files from your computer permanently in case you think your laptop or computer might be searched. Source: about 1 year ago

I usually have my drive accessible on a windows box and use https://eraser.heidi.ie/ to fill up all the unused space with pseudorandom data at 1 pass. I call that good for my usage. Source: about 1 year ago

Use Eraser https://eraser.heidi.ie it overwrites the data; you can set how many times you want it to do. Depending a how big the drive is it could take a long time. Source: about 1 year ago

The one I have used and recommend is Eraser: Https://eraser.heidi.ie/. Source: about 1 year ago