Pros: The "cleaner" is probably safe to use around the house, although not verified.
Cons: More than a 10% solution will leave a grease-type film on windows.
I bought two bottles of this "wonder cleaner." Part of the schpiel is that it takes off anything, you can use it anywhere at anytime. The sales guy even takes a sip of the stuff to demonstrate it's safe. Hey. If it's that safe, do you think that it may not work? Well, I would guess that vinegar in water would do as much or more as this stuff and you'd enjoy it on your salad. But vinegar isn't the $40 a bottle I spent.
The kids use it at 10% strength to clean their bathroom. It's as safe as putting water in the spray bottle. I accidentally used it at 50% strength to clean the car windows and was VERY sorry. It leaves a film that made it hell trying to see out at dusk. The actual reason I bought it was because the guy told me I could use it to get the oil off the garage floor. Being green conscientious as I am, I thought that it would be worth trying. I ended up having to use another product to do it because it didn't cut the used oil at 100% strength.