The damage caused by moles is almost entirely cosmetic. Although moles are often falsely accused of eating the roots of grass and other plants, they actually feed on the insects causing the damage. The tunneling of moles may cause some physical damage to the root systems of ornamental or garden plants and may kill grass by drying out the roots, but this damage is usually minor.

When mole tunnels become an intolerable nuisance, moles may be captured and removed without a permit by homeowners, renters, or employees of the property owner. If a lawn service or pest control technician is hired to trap nuisance animals, that person must have a Nuisance Wildlife Permit or registration issued by the Florida Fish and Wildlife Conservation Commission (FWC). No poison (bait or fumigant) may be used on native wildlife without a Poison Permit issued by the executive director of the FWC. Because suitable traps are available for mole control, it is extremely difficult to justify the use of poisons and the Commission has decided not to issue any Poison Permits for moles in Florida. This effectively makes the use of any mole poison illegal in Florida. As of summer 2007, the Florida Department of Agriculture and Consumer Services is considering suspending registration of all mole poisons in Florida to conform with the state's wildlife regulations.

Flooding the tunnels with water may force moles to the surface, but this method rarely works in deep, sandy soils like those common in Florida. 

Additional Resource 

http://edis.ifas.ufl.edu/UW080