I wash mine with hot soapy water scrubbing them with a toothbrush especially the holes & rinse, rinse, rinse & rinse again & then fill them back up & out they go. I haven't seen any hummies turning their noses up at them.
I am a strong believer in the simple fact is that what matters in this life is how we treat others. I think that's what living is all about. Not what I've done in my life but how I've treated others. ~~ Sharon Brown