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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.

To dispose of a dead iguana in Florida, first learn your local regulations. Litter laws may subject disposal in roads or bodies of water to a fine or jail time. Some towns restrict animal carcasses in trash bins. Instead, consider burial or cremation to get rid of an iguana. You may be able to dispose of iguana carcasses with a local animal control company, vet, or pet cemetery for a fee.

Squirrels hate not having access to secure shelter or food sources. Your best line of defense is to make your property less attractive by removing access to these things. There are chemical squirrel repellents, but these have mixed success. According to Pennsylvania State University, you can apply products containing the bittering agent denatonium saccharide to a squirrel's favorite fence, tree, or roof spots. However, you need to reapply repellents regularly, which aren’t scientifically proven effective.

Armadillos are attracted to water, so a leaky irrigation system or an overwatered lawn can encourage them to move in. They especially like wet areas where they can burrow and loose soil where they can dig for grubs. They are also attracted to dense ground cover, where they can often find food sources.