I agree totally with kaemmerite,declawing is not only bad for the cat but it is also
an unnatural process.Cats have to have their claws for self defense purposes as well as for killing their prey.Yes when they sharpen their claws it can be a pain on the furniture but that's something you need to live with.What you need to do is to get a scratching post of some type that would take care of the clawing on the furniture problem.It would be a lot less expensive and the cats would love you for it.
As far as the cats being restless at night.Remember that cats are by their very nature nocturnal creatures and so will find being cooped up anywhere in the house against their nature.
It's not the clawing up the furniture we worry about, it's the screens. He's had scratching posts, but never used them. He sharpens them on the carpet and just wants to get out when tearing at the screen.
Well, he'll have to put up with the being cooped up until we can do something about him.
Can't you get your cats nails clipped or filed periodically? I know you can do that with dogs, because we've done it with ours, but our cat never tears up furniture, so I've never had to deal with it before. Or, if your ca hates water as much as mine does, you could try leaving a spray bottle on the window sill, and when your cat starts scratching it, give him a spray or two. It sounds a little mean, but it doesn't hurt them, and they start to want to stay away from the spray bottle. It's been pretty effective for our cat.
Hmm, clipping his nails would result in a very bloody mess and he would most likely walk away with his nails still sharp. O_O
Spraying doesn't sound mean. We've tried spraying them whenever we see them in the windows, but we can't watch them all day. I have schoolwork in the day and I make dinner and/or do dishes at night. Putting the spray bottle in every window might work for the more timid cat, but the one who gets out will stand in his water dish with his two front paws and start splashing. I wonder if it ever grosses the other three animals out?
Haha, actually, I had to spray him to get him out of a tree today. Who needs a fireman?
EDIT: I just thought I should say this now, I don't plan on letting my parents take him to get declawed. I had no idea of the process beforehand and now I know that's the worst awful thing ever. It would make me cry for my baby.