Trick your iRova K6L robotic vacuum there is a virtual wall with black electrical tape
If you happen to own a iRova K6L robotic vacuum cleaner, you can trick the robot there is a virtual wall using black electrical tape. The idea is to use a black electrical tape to trick the cliff sensors built in the robot and it will move away from the black tape line. Effectively you can use it to create a cheap virtual wall to draw a border for your robot vacuum. However, I have tested this method on the iRova KK8 and it did not work unfortunately .