To detect a flea infestation, look for black specks on your furniture, carpet and rugs. If they turn brown or red when you put them in water, they are flea dirt and indicate your home is infested with fleas, states HomeAdvisor.
You may also detect a flea infestation by looking for the fleas themselves. Adult fleas are about 2.5 millimeters long with shiny, reddish-brown bodies, according to Orkin. Fleas typically spend most of their time on a pet rather than loose in the home, but you may see them jump off the carpet and onto you or your pet when you arrive home.
Another way to detect a flea infestation is to inspect your pet directly. If your pet is itching and scratching a lot, this is a sign of fleas, explains Orkin. Try running a flea comb through your pet's coat. When you pull it up, you may notice a flea or specks of flea dirt, according to Cesar's Way from Caesar Millan. Drown the fleas you remove from your pet in a bowl of soapy water.
Address a flea infestation by treating your pet with a product that kills both adult fleas and their eggs, advises Cesar's Way. All pets in the home should be treated at the same time. Vacuuming frequently and laundering all pet bedding in hot water helps remove fleas from the home.