I had to replace the strips twice within the 1st 24 hours. I even left them on the wall overnight before attaching the tower. The tower kept falling off the wall. I ended up reading reviews online and purchased the velcro Command strips that are made to hang pictures. That seemed to fix the problem.
The product is attractive and well-made. The age rating is appropriate; unfortunately, I missed it and bought it for my 31/2 year old grandson! He enjoys it, but forgets that he can't pull down on it, so it falls off the wall attachment. That is not the product's fault!
My only concern about the play value is that it is largely a "passive" activity. Except for moving the gates to direct the cars, things happen without intervention or much interaction.