Bests & Worsts Reviews from Amazon

I've been recommending this stuff to my clients for the last 15 years. Used it myself recently for the first time. Worked great! Just carefully follow the directions on the can. They are on the side of the can and are clear and easy to follow. There is a drying time noted and I would ventilate the room if possible (open a window). One can treats 2000 square feet. When it's not possible to vacate the house, I will treat a room, close the door, and place a towel rolled to the width of the door to help contain the freshly sprayed knockout to the room. Do not use on your pets! MAKE SURE to use an appropriate flea/tick control agent on your pet. If your pet is out in a yard regularly, treat the yard with an appropriate yard spray as well. If you would rather go organic for the yard, beneficial nematodes are wonderful as another reviewer mentioned. Follow the directions carefully so the nematodes are alive and hungry when they are applied. Update: 7/29/2018. Since I originally wrote this review, several new flea and tick products have become available. We have been seeing some resistance to the original topical veterinary products and are thankful to add some new weapons to the war of fleas. FYI- I DO NOT recommend flea collars for homes with small children or babies. Like dogs, little humans are not discriminating about what they put in their mouths. Please talk to your veterinarian to determine what product is best for you and your pet's lifestyle. Fleas are tough to get rid of. You have to treat the indoor environment, outdoor environment, and the pet at the same time. Fleas, like butterflies, make a cocoon before emerging as a disease spreading, allergy creating, anemia causing pest. The sprays one weakness is that it can't penetrate the cocoon. Pupated fleas can take up to seven months to hatch. You need to have flea control on your pet(s) to kill these new fleas as they emerge. Vacuuming frequently will encourage hatching. The vibration causes hatching. These hatching fleas do not mean that this product has failed. These new fleas are not able to reproduce, that's the nylar in the spray. It effects the development of the exoskeleton of the flea. It's too soft to get out of it's egg. TMI? These new fleas are "self limiting" and last around 30 days. This is why the pet topical flea control is an essential part of the treatment for flea infestation. After you vacuum when using knockout, make sure you throw away the bag or wash the bag-less canister. I went as far as spraying mine with a little knockout after washing it with hot soapy water. Flea Statistics to encourage you to kill all the fleas: For every one flea you see, statistically there are 100 more in the environment! The adult stage is found primarily on the pet. Only 5% of the fleas in your environment are in the adult stage. 10% are in the pupated stage, 35% larvae, and 50% in the egg stage. One flea can lay up to 2,000 eggs in a life time.