[Allegra]

It sounds like the furniture clawing is more of an impulsive thing and not something he does to be annoying? I use a water-squirter to teach mine not to claw the furniture.

Litter box problems can be more complex, but your vet should be able to offer some suggestions. My calico used a large palm plant for a potty when she was a kitten and when I finally caught her in the act, I squirted her, spoke sharply and put her on her litter box. Never had a problem after that.

[w_over_w]

I use a water-squirter to teach mine not to claw the furniture.

OH! I'm sure a squirter is VERY effective!