How do you clean cork tube/bar?

As title reads.

I have two big babies, living in small tanks rn.

I plan on moving them to big ones(approx 120L tank) when they become around 80 to 100g.

My concern is that I think I cannot find all the poops and miss some. How do you all find them and clean before it triggers a problem?

As far as I know, if they poop on corktubes and if it soaks in, it might lead to fungus and other harmful bacteria growth.

Looking forward to hearing from you leachi experts!

Thanks.