My shower has a 90 degree drain and the whole drain runs at quite a shallow angle. The pour down stuff doesn’t really do terribly well as it never covers the entire pipe and liquid only sits in the bottom. Has anyone discovered anything that will do the trick? At the moment I use an old toothbrush and jam that in and wiggle it about to shift gunk. I use a decent hair trap but it seems to be soap and conditioner build up that’s the issue.