How do I get rid of fleas?

So, my garage is flea-infested. Thankfully it isn't attached to the house. My roommate has flea-bombed it several times, but nothing kills them. There used to be cats living there, but they've been gone for two weeks and nothing goes in there so I don't know what they are feeding on. Thoughts?

bajablue5 years ago
Bummer.  I hate fleas.

Get thee some food grade Diatomaceous Earth  (DE) and sprinkle it generously throughout the garage. 

It's non-toxic (to humans and pets), environmentally-friendly... and it'll kill the little fleakers, along with ants, cockroaches and beetles. 

Garden and Agricultural stores carry DE.

From Wikipedia:

Flea larvae emerge from the eggs to feed on any available organic material such as dead insects, feces, and vegetable matter. They are blind and avoid sunlight, keeping to dark places like sand, cracks and crevices, and bedding. Given an adequate supply of food, larvae should pupate and weave a silken cocoon within 1–2 weeks after 3 larval stages. After another week or two, the adult flea is fully developed and ready to emerge from the cocoon. They may however remain resting during this period until they receive a signal that a host is near - vibrations (including sound), heat, and carbon dioxide are all stimuli indicating the probable presence of a host.[3] Fleas are known to overwinter in the larval or pupal stages.

Once the flea reaches adulthood, its primary goal is to find blood and then to reproduce.  Adult fleas only have about a week to find food once they emerge, but after that they can survive two months to a year between meals. Flea populations are unevenly distributed, with about 50% eggs, 35% larvae, 10% pupae, and 5% adults. Their total life cycle can be as short as two weeks, but may be several months in ideal conditions. Female fleas can lay 500 or more eggs over their life, allowing for phenomenal growth rates.

haventmadeabombyet (author)  bajablue4 years ago
Would this stuff be OK for the inside of an apartment? A friend of mine has flea trouble and Advantage isn't working.
Yes, Food-grade diatomaceous earth is safe anywhere. Best of luck to your friend!