Designed this because my Roomba kept getting stuck under the kitchen cabinets. This might be an issue for people with certain types of wood floor that expand and contract, or laminate floors that are free floating. In these cases the cabinets are mounted first, and then the flooring is put down around them. The horn keeps Roomba from going under the edge of the cabinet with it's sensor that can get snagged. I used ABS filament so that the glue would stick properly to both the Roomba and the horn. This won't affect any sensors as it can still see in a 360 degree circle and already has a black piece of plastic on top. I've had this on my Roomba for a couple of months now and everything works fantastically. No more getting stuck.