Review on 🚧 Dual Mode Virtual Wall Barrier: Ultimate Companion for iRobot Roomba 6 7 8 9 Series - 2 Pack by Elizabeth Moore

They are absolutely necessary to use Roomba effectively. iRobot knows this. That's why they charge an outrageous amount of cash for these items. These aren't one-off high-tech marvels, so the price doesn't justify them. I updated my device and the old towers don't work with the new Roomba. The worst thing is that I bought two and have to buy two more.