Hi all Hope your well.
Right I've had this problem going month's back and yes youve guessed trying to keep my T's tank's clean.
So I done some reading up and found that Woodlice are good Tank cleaner's but then there was another problem and that was putting something wild caught into my tank's wich I did not feel safe about doing so off again I went doing more reading, I was told to leave the woodlice in a tub for a few day to make sure what ever pest's they had were dead.
So that went all to plan but again
there was yet a problem I just kept running out off Woodlice.
I found out for myself how too breed them
and now I have more than plenty
So if you would like too breed Woodlice for your own use then here the trick how too do it
First you will need a tub or a cricket box will do (eg photo below).
For the next part you will need a ''none'' pestacide potting soil you dont realy need too fill the tub up that much let's say around an inch deep
Now spray some water onto the soil and make sure it's plentyfull Woodlice like it too be humid(70%-80% works best for me) because they do moult just like a reptile or Tarantula.
Now they need some food try adding some damp moss this provide's shelter for the young and food plus you ''will'' need to add dead leave's not fresh because Woodlice mostly eat rotting leave's and of course they love rotting wood not freshly cut wood this will not work.
Ok in order for them too breed the humidty must be high as said before but the temp need's to be high let say 20c-25c wich is room temp so that handy
you will have too wait a while too see any baby's but with in 2-3 week if you lift up a dead leaf you should find the young hidding and eatting under it
Here are some photos of the young with adult Woodlice if you can see the young that is.
A view form above of their food and hiding spot's (notice the leaf that has been eaten)
Anyways hope this work's well for you and dont forget too give them fresh rotting food wich should not be hard to find (eg local park or garden).