I used an RN4081 atty for 3 weeks and only drained it 4 or 5 times overnight, only dripping during the day.
Then I rotated 3 and washed them with hot water every night, they are all unusable after 10 days due to an awful lagging smell when using them.
I now returned to the method of not caring and voted for it. 3 weeks from 10$ is more then enough for me. Constantly dripping 4ml/day is certainly not in atty specs.