I haven't catproofed it yet! Waiting for the tax refund to appear. Pouncer stayed away from the edge after his fall (smart cat!) and the kittens get patted on the behind if they venture near the edge. Everyone uses something different to catproof their balconies, but chickenwire and mesh screening seem popular.

At their age, as long as they are at a good weight, many people feel its ok to stop the kitten food. I stopped kitten food when mine were 7 months old because my older cats were eating more than the kittens and gaining tremendous amounts of weight. If you worry about them not getting enough nutrients, give them kitten treats as snacks. My guys still get goodies for snacks. It lets me control what they are eating a little more so the older cats don't get the additional food.