My kids & myself catches all of our crawlers.@ $2.39/dz we save alot of $$.
We usually wait 3-4 hours after dark & the crawlers are out of the holes (trying to find some booty) & makes them easier to catch & not bruise or rip apart.
If it hasnt rained I will pour some soapy water where I plan on catching them,then wait few hours after dark.
Try letting them come out better before you go outside & see if that doesnt eliminate having to sneek up on them
I have noticed our best times is right before day break,them suckers will be stretched out like snakes.