My female cat only pees on my bed and the couch?

Your question confuses me a bit but I will try and help you anyway. If you take them outside to use the business, why did you mention kitty litter? Well cats indoors usually use a litter-box to do their business, it is a natural instinct for them and often there are NO problems once they know where the box is. You should try this also, get them a litter-box instead of relying on them to tell you when they have to pee and poo so you can let them outside. Cats need to pee and poo more than once a day also.. so once a day will cause her to pee around the house. Place a plastic cover over your bed when you are away.. it is not natural for cats to pee and poo on something such as that.. so she will STOP peeing in those places, however she will most likely just find somewhere else if you don't recognize why she's doing this. Also female cats coming into heat can begin to pee all over the place trying to attract a mate so have her spayed if not already done. Bopping cats noses does not usually work, works much better for dogs. Naturally cat's do not respond to hierarchy so this is not effective. Cats will simply begin to pee on your things out of spite. Catching her in the act is one good way to try and stop it, so be on the lookout for this. If you see her about to pee or poo on your bed, grab her quickly and pick her up, take her to the spot where she is supposed to go and if/when she goes praise her a lot. Try repeating this a few times as she will not learn with one time. Also be sure that her pee/poo spot is not near her food. Good luck!