I don't know what a commercial tower is, but I wonder why you put a light on them.

socks,
from what i read, you put a light on them because they don't like it, and will stay underneath the bedding to avoid it.

i found my answer, ha ha, had taken the light off, and sure enough, there were some that were escaping. tricky buggers.

hope that doesn't last long.

I've never understood, or agreed with, unless absolutely the last resort, the light solution. The worms like it dark and quiet without a lot of distractions. Give them all that, a little food, a little moisture, a little peace and quiet (leave them alone for awhile). Just look around the tower for jumpers.

Chuckiebtoo

Chuckiebtoo..I think perhaps you have not ordered worms via the mail, at least in awhile. I have ordered worms many different times. After they have spent 2-4 days enroute, been subjected to vibrations, heat, cold, and no food, I just know they are having a town meeting, where they make a plan, that once out of the bag and the sun goes down they are booking for better lives. If you take them out of their shipping bags and put them in a bin,( even with the best "resort" conditions possible), I will bank on them leaving as soon as it gets dark enough. I should have taken pictues one time when I had ordered my ENC's. I got them in the afternoon and put them in bins I had ready. I then had to go out a retrieve various 2 legged short creatures that live here and did not get home until it was an hour after sunset. (Dun,dun, dun,.. dunt) My husband had come home a bit earlier than I, and as I entered the house, he yelled.."Did you get new worms today?!?" (I left out a few explicatives) I ran down to find him, scooping up worms and worms hanging out of every orafice,(of the bin).
They will instinctively leave, to survive, as things just are not at all correct under these circumstances. If you put a light on, they will stay in the bin and have time to settle and realize in their own wormy way, that this place is calm, the right temperature, there's just the right moisture and..yay..food! After 2 days, perhaps, they are in their resort and no longer need to stray.

My first EF came via USPS in December, 2001 from Illinois. I was afraid they'd be vermi carcasses upon arrival, but the manila envelope was intact, with the worms looking for a better deal. I guess the bin was it. I opened the package and laid it into the bin intact. The worms were left to their own device and volition to crawl out of that house of horrors into their new home. They must have thought they HAD escaped.

Since, no mass exoduses have ever been staged, except that time I left a bin in my van overnight...in August...in Texas...in Austin, a city four hours away from my house...in a momentary, monumental, and unforgettable lapse of reason.

Chuckiebtoo

That's funny...I bet they did think they HAD escaped..:D