The best flea carpet spray may be one that not only is effective for killing adult fleas, but also for interrupting the flea life cycle. Some products, for example, prevent flea eggs from hatching and larvae from developing, effectively getting rid of the active fleas and those that are soon to become active. You might also consider the safety of the product for your carpets and furniture as well as for people, pets, or the environment. Additionally, you may find consumer reviews helpful when making your choice.
Many people consider the best flea carpet spray one that includes an insect growth regulator. This type of spray won't merely kill adult fleas — instead, it works to interrupt their life cycles and makes it impossible for them to continue reproducing. A spray that contains an insect growth regulator actually stops flea eggs from hatching and going on to the next stage of development. It also stops flea larvae from becoming adult fleas. This is helpful, as you do not have to wait for fleas to reach adulthood and start jumping around and biting before you can destroy them.
Since you probably won't want using a flea carpet spray to translate into a need to replace your treated carpets, the safety of the product you choose will probably figure prominently in your decision. You will likely want to carefully read the labels on the spray bottles to make sure the product you choose won't stain or otherwise harm your carpet. If you will have to spray elsewhere as well, such as on upholstered furnishings, you may do well to make sure the product you choose is also safe for this use.
Human and pet safety is also an important consideration. The best product is likely to be one that is safe for use in areas occupied both by people and their animal companions. You may also do well to make sure using the product or disposing of the used container won't pose a significant risk to the environment.
It is important to keep in mind when you are choosing a flea carpet spray that companies typically market their own products as being the best. In some cases, those with the most confident advertising are actually those that are the least effective. As such, you may do well to search for online reviews of flea products before you buy and choose one that most consumer reviewers agree is effective. Additionally, you might gain insight by asking family members and friends for recommendations.