The answer to 'signs of flea' is that common signs of a flea infestation include seeing live fleas on your pets or in your home, finding flea dirt (flea feces) on your pet's fur or in your home, and noticing your pets scratching or biting themselves excessively. Fleas can also cause red, itchy bites on humans. Flea infestations are often caused by bringing a new pet into the home, or by fleas being brought in from outside on clothing, furniture, or other objects.
If you suspect a flea problem, it's important to act quickly to eliminate the infestation. This may involve thoroughly vacuuming and cleaning your home, washing your pet's bedding, and treating your pet with a flea preventative medication prescribed by your veterinarian. In some cases, you may need to call in a professional pest control technician to fully eradicate the problem.