I compartmentalise it to stop it turning into a full time job. Generally don’t do it systematically on bike rides, saving it for walks instead – either specifically going out with a bag and grabber or building it into the point of the trip, e.g a local woodland bivi two weeks ago when I walked out from the door in the evening, then retraced my steps in the morning, cleaning out all the crap along the way.
I have to say, though, that the litter situation where I am now (South Wales) is so apocalyptic that it’s contributed to me deciding ‘**** this’ and I will shortly be relocating to Calderdale…
Too big for my 70l rucsac, so I tied it under the straps for the walk home.