Are these effective? I've heard mixed reviews

Are these effective? I've heard mixed reviews

So is it bad?

So is it bad?

Hey Shep, should I return the Anker robovac and get this instead? The robovac isn't as thorough in its cleaning as I would've liked. What do you think?

Hey Shep, should I return the Anker robovac and get this instead? The robovac isn't as thorough in its cleaning as I…