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The best deterrents for possums include securing trash cans with tight-fitting lids, removing outdoor food sources like pet food or fallen fruit, and trimming tree branches that provide access to your roof or an open window. Motion-activated lights or sprinklers can also startle and discourage them from visiting. Additionally, you can take advantage of their strong sense of smell by using garlic, onion, or commercial possum repellents to keep them off your property.

There are several ways to make your yard a less attractive habitat for moles. Protect your garden beds by installing a fence or other barrier about 2 to 3 feet deep around your garden.

Moles eat insects, so grub removal is another important way to prevent moles from destroying your yard.

Likewise, remove tree stumps, dead leaves, and other debris that attract insects to your lawn. Some plants will deter moles as well, including daffodils, marigolds, crown imperial, and alliums, like garlic or onions.

Some suggest mothballs as a deterrent for iguanas, but they are ineffective and harmful. Mothballs contain chemicals like naphthalene or paradichlorobenzene, which are toxic to humans and animals, including iguanas. The fumes can cause respiratory problems, skin irritation, and other health issues. Moreover, using mothballs outdoors is not recommended, as they contaminate soil and water sources.

There are DIY methods and store-bought pesticides available for the public to use. However, these pesticides also come with a risk, and you need to follow the directions correctly and take precautionary measures to prevent exposure to these chemicals. These methods may be an option for small pest problems, but you should call in a pest control specialist for persistent pests and infestations.