This kind of structure seemed a bit strange to me. When we say "Je me lave", it is like "I wash myself" and it's easy to compherend the existence of reflexive pronoun(me) there. But in this case; it's not easy.
So, my first question: Why do we double the pronouns?
"Je les lave tous les jours." "Tu les brosses tous les soirs"
Are these sentences unacceptible or grammatically false?