Article: Simply reducing the access that rats have to food supplies and shelter is an excellent way to control the critters. If rats are a known or suspected problem, make sure to do things like:  Cover all trash cans with tightly fitting, locking lids. Avoid leaving food or waste out in the open. Clean up all crumbs and other debris. Avoid letting things like newspapers, cardboard boxes, or clothing pile up. Keep grass and other plant material trimmed, and discard the trimmings. It’s not always easy to tell how rats are getting in your home. They can enter walls and roofs through surprisingly small and out-of the way access points. However, covering any obvious access points (like holes in a wall or roof) will at least slow them down.  Cover access points with wood, foam sealant, or similarly solid material. For a thorough job, ask a professional to inspect your home and deal with any potential access points they identify. Though they’re not a quick fix, “mousers” can be great at controlling rodent problems. It’s true that many cats are excellent hunters, and will pounce on any rats they find, and discourage others from sticking around. You might consider getting a cat for just this reason if you are bothered by the sounds of rats. Cats are not a perfect solution, however.
Question: What is a summary of what this article is about?
Get rid of clutter and waste. Cover all potential entryways. Get a cat.

Problem: Article: You will be working with chemicals that you should avoid breathing in. A basement, garage or outdoor driveway will provide a good place to work and keep chemical fumes out of your living space. You can also wear a mask to avoid breathing in fumes. If you must work in your living space, open as many windows and doors as possible and run a fan to ventilate the space. Use a drop cloth to protect the surface or floor you are working on. Leather dye can stain many surfaces, so make sure your floor is covered before you begin. It's best to dye cushions separately from the couch itself, also over a drop cloth. You can also use old clothes or rags if they completely cover the space under your couch. Remove any dust or dirt that is on the leather using a cloth and soapy water. Use a mild detergent. Do not soak the couch, as this can warp the leather. Lightly rub it with a cloth that you dip in the water and wring out.  You can try to get any stains out of your leather at this point. If they are light, the dye will probably cover them up. However, dark, noticeable stains might make your final dye job look uneven. White vinegar or rubbing alcohol can get rid of most stains. If there is any part of your couch that you do not want to dye, such as wooden or metal hardware, cover it with painter's tape. Place the tape as close to the edge of the leather as possible. If you need to, cut the painter's tape to a smaller size to make it fit in any small nooks and crannies. Most leather furniture will have a protective coating to seal in dye and protect the leather. You can remove this, along with any lingering oils, by using a clean rag to rub deglazer or acetone into the surface of the couch. It will evaporate almost immediately, leaving your leather clean and ready to dye.  Some of the original dye may rub off of the leather as you deglaze it. You can buy leather deglazer online or at most hardware stores. Use acetone (not nail polish remover) for a less expensive but equally effective solution. Avoid using products with alcohol or mineral spirits, as these will dry out the leather.
Summary: Carry the leather couch to a well-ventilated workspace. Place the couch on top of drop cloths and take off any cushions. Clean the entire couch with soapy water. Protect any wood or hardware with painter's tape. Deglaze the leather using a deglazer or acetone.

Although illness is relatively uncommon, crabs can get sick. This is usually related to problems with their habitat, or “crabitat,” but may be a result of other issues such as mites. Hermit crabs need access to water to keep their skin moist and healthy. Examining your crab for signs of dry skin can keep your crab from drying out and ensure it can breathe properly. Signs of dry skin in hermit crabs can include:  Lack of water in the tank or on a sponge Matte appearance to the skin Excessive burrowing to get at moist spots in the tank The environment in the tank is vital to a hermit crab’s health and promotes its movement, too. If your hermit crab isn’t moving around much, the water in its habitat or even toxic paint on its shell could be killing it. Lethargy can also be a sign of stress.  Recognize that most hermit crabs like to play and will move around their habitats a lot if they are not molting or sick. Make sure your hermit crab is moving regularly and not hanging out of its shell, which can be a signal that it is dying. Remember that lack of movement can also signal molting. Foul odor coming from the tank can signal illnesses related to problems with the habitat. Check on your crabs every day, which can quickly signal you to any bad smells that might be coming from the animals or parts of the tank. Be aware that there may be a broad range of odors that can signal problems. These include: stinky feet, fish or shrimp, mildew or must, rotting food. Mites are arguably the most common cause of health issues for hermit crabs and you should be especially vigilant in checking for these. Be aware that there are “good” and harmless mites that inhabit crab’s spaces and bodies but that there are also “bad” and harmful mites. Watch out for the following types of harmful mites:  Gill mites, which are light pink or red and bury into the gills of hermit crabs. These mites are often not visible until after a hermit crab’s death because a flap of skin protects the gills of live animals. Crab mites, which glue themselves to soft parts of hermit crabs’ bodies including the eyes, mouth, or joints. Crab mites range in color from white to cream, grey, pink, or red. In addition to the physical symptoms of illness, hermit crabs may also exhibit unusual behaviors. Checking on your crabs daily will help you see each animals typical behavior—hermit crabs do have distinct personalities-- and can alert you to potential problems. Some behavioral problems to watch out for are:  Digging down into the habitat sand or coconut fiber to “de-stress” Consuming large amounts of food or water Soaking in the water dish Being very lethargic.  Hiding in its shell for long periods, especially if it usually enjoys attention.  Molting in the open.  Hanging out of its shell in a limp or lifeless manner. Sickness is rare among hermit and other types of crabs. However, there can be some confusion when trying to tell if your hermit crab is sick because many of the symptoms of illness parallel the signs of molting such as missing limbs and burrowing for days or months. Some additional signs that your hermit crab may be molting and not sick, especially if the crab exhibits several of these symptoms, are:  Digging Drinking large amounts of water or soaking in the dish Spilling water from the dish to dampen the sand or coconut fiber in the tank Cloudy eyes Ashy-looking skin, which is also called the exoskeleton Lethargy.
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One-sentence summary --
Look for physical signs of illness. Examine for dry skin. Notice lack of movement. Smell the tank. Check for mites. Observe behavior. Avoid confusion with molting.