If you have an iguana frequenting your area, you can take steps to deter the animal, such as modifying the habitat around your property or humanely harassing the animal. Examples of effective habitat modification and harassment include:
• Removing plants that act as attractants
• Filling in holes to discourage burrowing
• Hanging wind chimes or other items that make intermittent noises
• Hanging CDs that have reflective surfaces
• Spraying the animals with water as a deterrent
(Information and photo source: Florida Fish and Wildlife Commission)