RECOMMENDED: Click here to Best SSD Drives and improve PC performanceAndPerfect Disk 12 Defrag - Download Free Trial

As Microsoft is known mainly for Operating Systems, Raxco is known for producing some of the highest quality Defragmentation software on the market.

I've personally used several different versions and builds of PerfectDisk 11 and 12 for defragmenting SSD drives, and have never had a single issue with the software. In fact, it can make a noticeable increase in your system performance, this is more noticeable with older SSD drives.

PerfectDisk 12

This unavailable memory will eventually be used as you start writing to the disk to reduce wear to any one part of your SSD over time (different drives, controllers, manufacturers will implement this SSD feature differently).

That being said there are SSDs that are rated for 7+ Petabytes of lifetime writes, so a 60-240GB defrag is a very small fraction of the total lifespan.