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Adult fleas can live from a few days to about two weeks without a host. If pets are not available, fleas may feed on rodents or people. While adult fleas need a blood source to survive, flea pupae can lie dormant for up to a year in optimal conditions. Therefore, cleaning and treating the infested area is essential to prevent pupae from surviving and hatching later.

Look for consistent buzzing sounds, visible hives, or increased bee activity around your property.

Tree sap is not usually dangerous to humans or pets. But some trees do produce dangerous sap. Notably, ash, birch, cedar and similar saps can irritate the skin but aren’t dangerous. Sap from trees like the Brazilwood, Mahogany, Milky Mangrove or well-named Poison Walnut can be corrosive, cause nausea, or trigger those with asthma. But for most backyard trees, protective equipment like a sturdy pair of gloves should be fine.

Paper wasps, like many other wasps, are attracted to sweet smells that remind them of nectar. That’s why wasps may buzz around you as you snack on watermelon on the patio. They may also like the scent of certain perfumes. Standing water attracts these wasps, too.

Paper wasps are also attracted to warm, sheltered spaces, where they can build nests and raise larva in protected areas away from predators. They may also be attracted to untreated wood on your deck or fence, as they use wood pulp to build nests.