What are the signs of rodent infestation?

From the E.P.A.

You may never see a mouse or rat unless an infestation is severe. Look for signs of rat or mouse infestation:

• Rodent droppings around food packages, in drawers or cupboards, and under the sink.
• Nesting material such as shredded paper, fabric, or dried plant matter.
• Signs of chewing on food packaging.
• Holes chewed through walls and floors that create entry points into the home.
• Stale smells coming from hidden areas.

Rodents create mesh in house or outside. They can spread disease or damage the household things. To eliminate the rodents Pest control is the best option. They use some Chemicals according to the needs and terminate the pests permanently.

Pay close attention at night to any sounds that may be coming
from your attic. This indicates rat movement and the time when rats are
actively searching out food and building their nesting areas. 
They need to be moved out of the house immediately and for that you can control any pest company like rat control Sacramento which will help you out with this.

No rodents should be ignored.Pest Exterminators understand rodents, their behavior, and how to rid your business of them.