The set up for this took me about ten minutes, I wanted to make sure I did it right and read the manual.  That part was easy. Getting my two older 10 & 13 year old cats to actually use the device, that was the tricky part. One was scared of it, but she is scared of everything, and my other was more curious. Still, I did have to keep their old one near by and ultimately removed it. The word "copycat" rang true, and my more adventurous one led the way. 

Once that period was over, I got to say, as a cat owner I really appreciate how it kept the smell and clean up to sheer minimum. I am in an apartment, so things can get intense quickly.  I know they recommend the blue crystals, but I personally have started using another brand of clumping litter with no issues. Do that at your own peril.    

So, I can definitely recommend this. But definitely be prepared for your cat to not automatically be as excited as you.