No... they don't take care of them... People just don't think about stuff like this...
I think people just find it boring...they already HATE cleaning and heaven forbid having to turn around and clean a vacuum after using it....aside from just emptying the bin..
So many things I think people just don't think about.. Coffee makers, travel mug lids, washers, dryers, changing your HVAC filters...and on and on..
I just got a travel mug to use here at home and it keeps coffee and hot chocolate super hot because I drink it slowly...but I was trying to figure out how to clean the lid...Like take it APART and clean it because the clean freak in me knew that unless I take the lid itself apart, it's going to get nasty..so I was youtube searching and figured out how it comes apart easily for cleaning.... and came across the video of a Dr. who had a patient who used a travel mug that made them severely ILL for months because the lid was growing bacteria... It confirmed my suspicions...