Use the search function from PestWorld.org or BBB.org to find a pest control company in your area that handles moles. You can also ask family and friends for a referral, if they have recently employed a pest control professional.
Most pest control companies eliminate moles by trapping and relocating the critters, but if this fails to work, poisons may be necessary. Always verify the credentials, license and insurance status of pest control companies before securing their services to ensure they carry out the job safely.
If you have difficulty finding a pest control business in your area, you can try to eliminate the problem yourself. Visit DoYourOwnPestControl.com for information about mole eradication and the equipment necessary to do so.