@nixCraft ROFLMAO!

The only safe method is to fully encrypt all SSDs from the start of the use and then use
shred -f -n 1 -v -z /dev/$device
to wipe them.

Like this:
https://github.com/kkarhan/misc-scripts/blob/2999339de4df13457f3a43cbb13beba9e55268ba/bash/wiper.sh#L44