Review on UnitedGene Replacement Serires Robotic Cleaner by Misty Wood

About half of the two lots I bought had the air filter media installed in the back of the plastic housing. Half will likely clog up very quickly, making them even more vulnerable to the next problem. In addition, the filters are not closed at the edges like in iRobot. This means the airflow is equivalent to a 1cm diameter hole in each filter allowing dust to pass through. Don't buy them. You are not sure.