Do you mean ribbons?
um well yes and no.
it depends on the type of materiel.
is it like the tags you have on your jumpers and other garnments.
if so yes.
dirty
Wash them.
wash them.
It really depends upon you, I wash my car every week even if its not dirty, some people wash it when its dirty... hope this helps.
you can put dirty clothes in a wash bag
You don't have to but if it is dirty, wash it.
...wash them.
Dirty!
If you do not wash it for a long time.
then your dirty all the time.
A leather shoe
When a German's hand is dirty he will generally wash it.