Fleas originate from another infested animal. They easily spread between different animals and then make their way into your home when the pets come in for a visit or to sleep. Outside, fleas can typically be found in shady areas, near long grass or bushes, while they wait for a host to pass by.

Where do fleas live outside?

Outdoors, fleas prefer moist, shady, cool places. They especially like shrubs, leaves, and trees, and don't fare well in sunny areas or open grass.

Can fleas live outside without a host?

Without a host, adult fleas live only a few days to 2 weeks. ... Fleas do not survive well outdoors in hot, sunny lawns. Relative humidity less than 50 percent or soil temperature higher than 95 degrees F kills flea larvae. Moist, shaded spots near pet resting areas are the places to find fleas.