rental property fleas

Hey, i dont know if this site is still active but im really desperate for flea advice. 

We just moved into a rental property where the previous owners had had pets and when we moved in we found that there was a bad flea infestation. The main living room is carpeted but the bedrooms are hardwood. We tried simply flea bombing the whole carpeted area but as expected from reading this sites articles they returned worse than ever within 3 days. 

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