These eggs fall off into the environment, hatch into larvae, enter the cocoon like pupae stage, and then hatch out into new adults. (boyetteanimalhospital.com)
The most important source of cat fleas is newly emerged adult fleas from flea pupae in your house or yard. (lienanimal.com)
So if you want to kill some flea eggs and larvae - and slow the growth of flea pupae - something as simple as using your dehumidifier can be all it takes to kill some fleas. (pesthacks.com)