How do you kill a flea cycle?
Checklist—Target Flea Hideouts!
Help your pet break the flea life cycle with a flea treatment.
Clean the house thoroughly on the same day.
Wash all your pet's bedding at a high temperature.
Vacuum your carpets and furniture to remove eggs, larvae and pupae and discard the vacuum cleaner bag.
https://www.wikifleas.com/2018/10/the-flea-life-cycle.html