Is fdisk, disklabel and newfs enough to "reset" an SSD

[Clint Pachl]

I would like to reinstall a fresh system on an SSD that contains an 
existing installation. From my limited knowledge of SSDs, I wonder if 
the drive controller may "retain" data from the old filesystem, unaware 
that there is a new filesystem put in place.

Is this a concern? If so, how does one "reset" a used SSD for optimal 
operation with a fresh install?