If possible, close your bedroom door at night. Cats are notoriously difficult to sleep with as they rarely sleep a full eight hours and can cause you physical harm via biting and scratching if they're startled by your movements during sleep. It's best to keep your cat out of the bedroom at night, and establish altogether that your sleeping space is not a cat-friendly area. Leave the door closed during the day as well. Cats are territorial. The more access they have with a particular space, the more they think of it as their own, and the harder it is to keep them out when you're trying to rest. If your cat feels they have their own place to sleep, they're less likely to invade yours. Cats take refuge in comfortable spaces, surrounded by their toys, litter box, food, and bedding. Setting up a comfortable sleeping space for your cat can give him a place to go at night that won't interfere with your sleep. A high resting spot is ideal, as cats are natural observers and love to view a wide scope. A multi-level kitty condo, available for purchase online or at pet stores, can be a good option as it's comfortable for rest and also allows your cat to climb high. Cats need multiple places to sleep, so provide them with multiple options. While many pet stores sell expensive bedding, just a pillow or blanket is usually sufficient. Place cat-friendly bedding throughout the house, and places where you are okay with your cat taking a snooze. Place a small pillow on the arm of your sofa, or a warm blanket on the top of the stairs. This signals to your cat that these are places for him to sleep. Cats are most vulnerable when they are sleeping, so they prefer to rest in areas where they feel safe. Provide refuge in quiet spots of the house, especially places that are somewhat hidden like behind or under furniture. As stated, cats feel like a space is their own if their things are nearby. Set up resting spots close to your cat's food, water, litter, and toys so the cat knows this is a space for them. If your cat keeps trying to get in at night, there are a variety of ways to deter this behavior. Set up some kind of inconvenience for your cat, or something that will startle him, and he'll be less likely to come to your door to cry and scratch. Place something in front of the door, such as vinyl carpet runner placed upside down to expose the knobby bits, double sided sticky tape, or aluminum foil. The unpleasant texture will make your cat less likely to bother you at night. Set up a booby trap to startle your cat. Hang your blowdryer from the doorknob or place your vacuum 5 or 6 feet away from the door. Plug the dryer or vacuum into a remote switch, which can be purchased online or at a Radio Shack, and when your cat starts meowing or scratching turn the appliance on. The noise will startle your cat, and he'll be less likely to come back after that.

Summary: Leave your cat in a separate room. Create a resting space for your cat. Keep deterrents by your bedroom door.

Sodium bisulfate is an acid that is sold in granular or powdered form. It has the advantage of being a bit safer and gentler than muriatic acid. Sodium bisulfate for pools is available at most home and pool supply stores. Different manufacturers may provide different instructions for use. In some cases, it may be necessary to dissolve the sodium bisulfate in water before adding it to the pool, while other products may be added directly to the pool water in powdered form. Follow the manufacturer's instructions to figure out the correct amount of sodium bisulfate based on your pool's size and the current pH of your water. You may wish to use of the recommended amount in order to avoid lowering the pH of your pool too much. You can also use a pool calculator, such as this one: http://poolcalculator.com/. Sodium bisulfate is relatively gentle, but it can still cause serious burns and irritation. Wear gloves and clothing that covers your skin, such as a long-sleeved shirt and long pants. Always work in a well-ventilated area. If you are concerned about the wind blowing acid granules into your face, wear protective goggles or a face shield. If you get sodium bisulfate on your skin, wash thoroughly with soap and water. Go to the doctor if you experience skin irritation that doesn't go away after washing. If you get any sodium bisulfate in your eyes, rinse with cold water for at least 15 minutes and then get medical attention. If you swallow any of the powder, rinse your mouth out with water and drink at least one tall glass of water. Seek medical attention immediately. With the pump running and the jets on, slowly add the acid to the pool water directly over the return jets. Take care to keep the powder away from the skimmer. Get close to the water when you pour, and take care not to let the wind blow any of the powder back onto you. Give the acid at least 4 hours to circulate, then test again. Since sodium bisulfate can also decrease your pool's total alkalinity, it is important to test that as well and make sure it is still within an acceptable range. Make any necessary adjustments based on the results of the test. Don't wait longer than 24 hours after adding the dry acid before re-testing your pool's pH levels. If your pool's total alkalinity level is too low after adding sodium bisulfate, raise it by adding an alkalinity increaser, such as baking soda or sodium sesquicarbonate, to the water. Alkalinity boosters for pool use are available in most pool and home supply stores. Soda ash can also raise your pool's alkalinity, but may cause the water's pH to become too high again. Follow the manufacturer's instructions to determine how much of any alkalinity booster to add to your pool based on the size of the pool and the current alkalinity level. If you are using plain baking soda, you can use a pool calculator, like this one: http://poolcalculator.com/. Although sodium bisulfate is relatively gentle, it can still irritate your skin and eyes. Give the acid plenty of time to dissolve and circulate throughout the pool before you jump in.
Summary: Buy sodium bisulfate or "dry acid" for the pool. Follow the instructions on the package. Determine how much sodium bisulfate to add. Use safety precautions. Pour the dry acid into the pool over the return jets. Wait a few hours and re-test your pool's pH. Add an alkalinity booster, if necessary. Wait at least 4 hours before swimming.