We have been loving the grassifier for our 4 year old Dalmatian. We just moved into an apartment. This has been a lifesaver. Dog gets her two walks a day, and doesn't need constant wee wee trips outside.
Do recommend using the drip tray and emptying once a day. The mess was too much without it, even having it placed over two drains.
Hoping the grass lasts us a while. It's been a week and looking ok so far. I wonder if I'll be able to give another review with an update in a couple months time!
I'm definitely very happy. Would prefer to clean a drip tray everyday than take her out 8+ times a day to sniff and wee.