On platter drives, when it is time to dispose of them, a degaussing takes care of the data and in most cases erases the factory pre-recorded servo tracks rendering the drive useless.
What does one do to an SSD to get the same data destructive and rendered useless assurances?
EDIT:
Would taking it out of the case an microwaving it do the trick?
With any device, completely physically destroying it would work. For example, dumping a load of thermite on top, or throwing it into an incinerator. Unfortunately, unlike HDDs, drilling a couple of holes randomly likely won't work - but if you can locate the flash chips, you can smash those up.
Apart from that, SSDs all (to the best of my knowledge, though it is difficult to confirm without testing) implement the ATA secure erase command (or its SCSI equivalent), which can be sent to cause the firmware to erase all data.
I found a couple of solutions that are destructive to .375 particle size. The "Crushers" are not cheap, but if info destruction is required, this looks like a way to do it without setting the drives on fire.
This looks like it will do for a desk top situation with low volume SSD- Hard Drive Crushers - CUI / Commercial Use.
And this one is more costly, but at .375 particle size:
To avoid RSI, fumes or electric shocks, I suggest buying a blender to shred the cards.
These are always fun: What Happens When You Blend A PS2 Memory Card?
Funny yes. But considering the cards are too small for normal office shredders - probably the practical solution.
With solid state drive you need to invoke a Secure Erase command in the disk controller or ATA Secure Erase command. Now in theory this will be "secure" and you wouldn't be able to recover the data after that. This however is not always the case as discussed over on the security SE ATA security erase on SSD
Kingston has published an article on the subject as well "SSD Data Wiping: Sanitize or Secure Erase SSDs?"
Now as Bob said "With any device, completely physically destroying it would work" this is and will always be the only way to guarantee that the device will be permanently inoperable with no chance of data recovery. Now like you said not all of us have access to thermite however that shouldn't stop you from going over the top to destroy it. You could use electrolysis you could use a microwave or you can use the age old technique of getting a hammer and converting your storage device into dust.
Discalmer: Great fun the first time you do it but gets tiring on your 5th device
Well I don't know about pc but I'm sure there is an equivilent. On mac you can boot up on the recovery HD or the disc/ USB you used to install your os and you say erase all data then erase free space. After you have "erased" everything the data is still there it's just made "available" and will be gone once you write over it. So in mac you say erase free space and set the slider to most secure them hit the go button and wait.
Just take apart the case, and drill through or smash each of the memory chips, for, as noted in https://security.stackexchange.com/questions/12503/can-wiped-ssd-data-be-recovered "standard utilities for sanitizing individual files were highly unreliable on SSDs: often a large fraction of the data remained present somewhere on the drive. Therefore, you should assume there is no reliable way to securely erase individual files on a SSD; you need to sanitize the whole drive, as an entire unit."
