I know this is a recurrent topic, however, technologies evolves and so products and advices.
I have a couple colonies still in the test tubes. Every time I have to clean the tubes or add protein (shrimps) and a drop of nectar, it turns into hell of a fight.
Do you know any product that I can use at the end of the tube that could prevent the ants from escaping? And yes, I could put cotton but I want some kind of liquid to keep the tube open allowing me to do maintenance. (To avoid jokes )
I don't know if this exists and if so, if it is recomendable or really useful.
In any case, I would appreciate advice. Thanks for your time!