Pros: speed modes, timer
Cons: could hurt paws, mouse is plastic and nonreplacable, cheaply made
Toy comes fully assembled, plastic. Needs batteries for operation. Has different speeds in go/stop mode. Plastic mouse is removable. In fact, Frolicat toys don't seem to be made with durability in mind. If batted hard enough, the wire that holds the mouse could probably bend.
I removed the mouse, attached a fur tail to it to entice my cat, and it captured her attention sometimes.
It might be more effective if there were something more. Maybe bigger circular base and less domes?