works well
The cats love playing with it, it sticks really well to the window – it's been "stuck" there for 1.5 months already and doesn't look like it's coming off anytime soon. I cleaned the window beforehand and made the suction cup nice and wet, then left it alone for 24 hours. The cats love pulling on the fish and chasing it, it bounces nicely on the elastic band – I'm thrilled.