Because shag rugs require more material than other styles of carpeting, they are usually more expensive. In most cases, the price of the rug varies depending on the material, with leather, suede, wool and bamboo being the most expensive types of shag rugs. They also require more maintenance than other rugs, which can mean further expenses.
Shag rugs are usually more difficult to clean than other types of rugs because the pile is so long. Dirt, crumbs and other debris can easily fall through the layers, so additional effort is necessary to remove the mess since a vacuum may not readily pick it up with all of the material in the way. A shag rug's long pile also makes it more prone to stains. When substances spill or splatter on the rug, your cleaning agent may not reach the stained areas in all layers of the pile.
It is not unusual for a shag rug's pile to begin to loosen over the course of its life. As the fibers unravel, you may begin to find pieces of the rug throughout the room. The unraveled portion of the rug may also become an appealing snack for pets, which can be detrimental to their health. The portion of the shag rug that has come loose may also contain more dirt and debris since it is especially difficult to clean those spots.
Because a shag rug's long pile is ideal for hiding dirt, dander and other material debris, it can affect the air quality in your home and exacerbate symptoms for allergy sufferers. A shag rug is also more likely to harbor dust mites, which can be harmful for individuals who have allergies, asthma or other respiratory issues.
Shag rugs were common in home décor during the 1970s, so they can sometimes have a dated look. Some homeowners also complain that the long pile gives a room a tacky feel. As a result, it may be a poor option for your home if you prefer a sleek, contemporary style.