you can use drive wipers on ssd's and it should be just as if not more effective than on a hdds.
reason being is on an ssd the cell is either on or off to represent a bit. so if all the cells are written as 0 the drive becomes truly blank as there should be no residual signal left to interpret by forensic software.
while on a hdd you can reconstitute the data by reading the disk as there is always a residual signal left over even after multiple wipes.
if your still not happy you can always remove the drive and either keep it or destroy it with a hammer.
I thought Parted Magic at least was payware? Might be thinking of partition magic.
I don't much like the idea of important security software being closed source. It's too easy to just claim to wipe the drive, but actually encrypt it (which will look like perfect random data if done correctly). Admittedly, ATA SE is a bit harder to fake.