hiding feeders

Question
ok so I know this isn't DIRECTLY reptile related but I really didn't know where else to go.  My dubia roaches just came in for my 3 leo's so after gutloading for a day I threw some in last night.  What I noticed is that, while my girls got a few bugs, most ended up disappearing into various parts of the tank.  I have a pretty decent desert viv in my opinion and I really don't want to tear it apart and stress them out just to find these things..especially when I know they'd just hide again after I got them out.  So basically what I'm asking is, should I worry about these roaches hiding for good and possibly growing too big for them to eat? Or do I trust my leo's hunting skills to eventually get the roaches whenever they do decide to come out looking for food maybe?  I put an apple core in the middle of the tank last night to try and draw the roaches out in the open.  Is there something else I could use that would be more effective at drawing them out? I know people use potato for crickets so I kinda used that idea but I feel like roaches are a bit more skittish and reluctant to come out.  I feel like I'm going to have to fill in small nooks and crannies in my caves and logs...but i'd like to draw them out first to fulfill their destiny!!

Answer
Hello Mike,

Well, it is usually not a good idea to leave feeders such as crickets or roaches roaming the tank overnight.  While they do hide, they will come out at night & can bite reptiles.  
If you want to leave food in for them overnight, I would recommend using mealworms or phoenix worms & keeping them in a feeding dish that they can't climb out of.  

So, yes, it is possible that they might not come out for awhile & only come out to find food, etc then grow too large.  
The only thing that will really draw them out is food.  LOL  You should probably clean the tank out, I hate to say.  That is really the only way you will get them all most likely.

Good luck.
Tracie