We used a spray bottle of water to train them. When they do something bad we spray them. It works pretty good . . . Our cats never liked a covered litter box.
We trained ours with a squirt gun -- worked great, but you must begin when the cat is young, and you must be very consistant with your discipline.
We LOVED the covered litter box. It kept so much litter off the floor. Our cat'd stick his head out of the box while he was "going", and he looked like a cat head statue -- he'd stare straight ahead. He DID NOT like us to watch him while he was in the litter box. He'd stare straight ahead for a bit, then he'd give us a nasty look as if to say, "Look, here now. I am in The Box. Can't a cat get a bit of privacy?" And then he'd whip his head around to the front again and ignore us. He didn't think it was funny at all.
Litter box hint: Take a full-sized trash bag and drop the litter box (bottom half only) into it as if you're going to throw it away. Mold the bag to fit the litter box shape, and replace the lid/hood. When it's time to throw away the litter, remove the lid, turn the trash bag inside out (leaving the clean litter box behind), and everything's neatly packaged in a trash bag for you. Full-sized bags are cheaper than those little cat bags, and this method is more convenient.
This won't work if your cat isn't declawed. He'll claw through the trash bag, and your litter'll drop down beneath the bag.
Keep the litterbox where the dog can't get to it. Dogs like to eat cat poop
And then they throw up the cat poop on your sofa.
And we have a smart cat, it knows it shouldn't be on the counters and table - when we are looking. She knows that when we aren't home or aren't there, we can't squirt her. (Double sided tape and tin foil didn't do much to dissuade her either)
Yeah, we trained our cat NOT to sit on the sofa, but the reality is that we trained him not to sit on the sofa WHILE WE WERE HOME.
I did once set up a cat training method /trap that worked wonders. The cat was so terrified that he remembered the lesson for the rest of his life: When we were expecting our first child, we set up the crib with all the nice bedding, and the cat said, "Thanks! How thoughtful of you. How'd you know I wanted just such a bed?" He was a big, full-grown cat and could easily jump up over the rail and into the crib. I kept seeing cat hair on the crib bedding, but I couldn't catch him in the crib, so I couldn't use the water gun. He was a long-haired cat, and I couldn't allow him to leave hair in the crib for the baby to get into her mouth, nor did I want him to get into the habit of jumping into the crib with the baby. So I had an idea: He was TERRIFIED of garbage bags. Anytime I shook out a bag for the kitchen trash can, he'd jump straight in the air Fred Flintstone style, turn in mid-air, and disappear in the other direction for several hours. So I took some wooden building blocks and built up several "towers" in the crib, and I loosely stretched a trash bag over them. I think he did it while I wasn't home, but I saw evidence that he'd jumped into the middle of that trash bag.
I hated to scare my kitty so badly, but he had to learn to stay out of that crib. I never even saw him near it again . . . ever.
Oh, one more question....what do you do to prevent hair balls?
We used to buy some stuff in a toothpaste-like tube that helped tremendously. He was a long-haired cat, so this was a big problem for us, and our carpet was -- you guessed it -- hairball brown, so we were always finding those things with our feet. At first he didn't like the stuff in the tube, so we'd rub it on his feet. We'd press it in a bit so he couldn't shake it off. It made him mad, but he'd lick it off (giving us the evil eye the whole time). It didn't take long for him to start enjoying the taste, and soon we could hold out the squirt tube to him, and he'd lick straight from it. It was like cat crack, but he had to develop a taste for it. I can't remember what it was called, but I'm sure it's available at the pet store.
Oh, on the subject of Kitty Crack, defintely grow him a little cat nip or alphalpha in a cereal bowl. He'll love it, and the greens are good for his digestion.
We have two cats that we adopted as kittens last year. One faithfully sleeps in a basket with a pillow, the other sleeps between the cushions on the couch--weird, I know.
That reminds me: Our cat had a pretty wicker basket with a pillow, but he wouldn't sleep in it. He liked to curl up in a little spot under a bed, or in some other hidey-hole. The only exception: Every year at Christmas we'd put his basket in the middle of the presents under the tree. He LOVED to lie in his basket and look up at the lights.
One important note about baskets: Do not buy a used basket at a yard sale or consignment shop. Cats are very territorial about their things and do not like to share them (exception: litter-mates who've been together all their lives). I brought home a nice basket/pillow for my cat, which I bought at a yard sale. He immediately sniffed another cat's scent and peed all over it, marking it as his. I tried to air it out, wash the pillow, etc. -- nope, he would not have it. He peed all over that thing. I had to throw it away.