How much does it cost and how long is the process of getting bonded for a business like a cleaning business?

How much does it cost and how long is the process of getting bonded for a business like a cleaning business? I am not really sure what bonding is can someone tell me that. What could prevent you from bonding someone from a business. Where would you go to get bonded? I have an LLC what else do I need to do. Any help would be appreciated thanks