Re: How to clean 'bits' from insde a urine bottle?
Thank you both for the advice. Sorry about the delay in replying.
I have been using a plastic jug for the job as it is easier to get inside and clean. The bottle has been sitting with water and disinfectant in it since I posted my query here, but the 'bits', or bacterial growths I think they are, are still evident on the bottle walls.
I will have a go with your methods.