squeeze the sh*t out of them while rinsing them off in water
I just buy meal worms at my LFS for $1.35 a dozen. I ussally feed one worm every 2-3 days. The worms are kept in a jar and are fed carrots, garlic and hikari color enhancing pellets.
I have been doing this for the past couple of weeks and have noticed great growth and coloration on my s. sanchezi.