I have purchased several pet gates to keep my one yr. old runt of a Shih Tzu, "Elfie" from entering my carpeted areas.  He managed to jump over 24 inch gates!  I think I got a "monkey dog" instead.  My son's larger female Shih Tzu does not even try to climb over the shorter gates.  It took a while for me to put the gate up adjusting it to fit a rather large opening, but I did it myself and I am 70 yrs. old.  The handle to open and close the gate was somewhat difficult, but a little W-D 40 helped.  The reason I gave this gate a 4 is because I am still waiting to see if Elfie the monkey dog will figure out a way to go over the top!

Pros: A taller gate requires a door because I am only 5 ft. tall and 70 yrs old and I surely cannot climb over it.
Cons: Handle is a bit difficult to push to open and close.