There is no need to treat with powerfull insecticides as the flea is easily affected by eliminated by common insecticide, but there is a need to treat often and everywhere. Often, because the fleas which have survived to the initial treatment (because under the form of the more resistant egg or nymph development stage as seen previously) have to be also eliminated to avoid an other infestation. Everywhere because fleas, larves and nymphs are deeply entranched in the carpets, pillows, furniture tissus, etc....

We advise to use household insecticides to be sprayed regularly on surfaces that are proned to have fleas, larva and nymphs. 

The vaccuum cleaner also helps diminishing the numbers of eggs and nymphs. One method is to vaccum just after spreading insecticide powder to prevent fleas from multiplying themselves inside the vaccum cleaner bag. 

Pets bedding are typically a flea nest. You can either change them, which would be the best, or take advantage of the summer to putthem inside a plastic bag with inside a good dosis of insecticide powder.

Some laboratories propose some more elaborated products. these formulations are said to be long lasting: they are typically effective over several days or several weeks. These are interesting products as you do not have to treat as often and they guarantee the insects elimination. They are obviouly more expensive than standard insecticide household products.
There are also specialty products containing an active ingredient preventing the larva to develop into its nymph form, which is the morst resistant form. Recent studies have been performed inside our laboratory to show that these froducts are effective but last a relative short period of time. Furthermore, they are very expensive. They can be purchased under gas propelled spray that is a one time use.

For "industrial" surfaces, such as garages, gravel, we can use thronger chemical or physical treatments (lime, sodium hydroxide, fire,...). Fire treatment is perfectly suited for large ciment surfaces such as the ones found in canels. 
La lutte contre les puces, si elle suit ces principes, doit être couronnée de succès.

You then need to avoid that the insects re-appear. The best in that case is to protect the potential carrier :

You need to effectively treat all your pets at home with an insecticide collar for instance and if possible ban the access to your house to foreign animals. A new pet you are bringing in needs to systematically be treated with for example an insecticide shampoo or powder.