Yes i do agree on your reference there and recommend Hottentotta caboverdensis Again, i seen certain member stating they are Hottentotta hottentotta (ex caboverdensis) curious on this.

I take my statement back. After reading(or mere looking at the introduction) on research paper, your actually made thing easier for us. You spoil me my friend. I will help you part with them when i am back if i may, so you could actually spend more time reading research paper, and my life easier LOL.

Zoejehuty:

Your first answer will be, both will do fine, if they are free from any chemicals and parasites. Main purpose i use substrate is to provide moisture or occasionally provide hiding place for them. They hardly be any other reason for this substrate i can think of. Hyourin has answer it nicely and short.

To answer your 2nd question, insteed of trying to prevent them burrowing, is easier to change to other kind of feeders?

Apart of making sure my Heterometrus spinifer eating the superworm of crushing their head and making them lifeless and undesirable for the scorpion, i can't really prevent them on burrowing to substrate unless i don't use substrate at all. Thing with superworm is, most of the time they will find a nice moisture spot in the substrate and stay there till they become beetle. Usually is under the water bowl.

What's with all the bold latin name lol
Anw, whenever i feed my scorp, i make sure they eat right after i throw in else i ll take them out
Juz to prevent any unwanted circumstance....
The dizzy chef answered well, juz crush their head or like me, kill them straight and throw in

i've stoped feeding mealworms.. now constantly feeding with crix.. Seems they get fatter with crix.. only wen the crix are gone then i will feed them mealworms..
But to solve te matter of it being dug into the subs then it is wise to pre-kill or like Ryo would have done which would to kill it... the scorp will eat it none the less..