Fleas are one of the most common parasites caught by cats and dogs. As well as being an inconvenience, flea saliva is considered as one of the most allergenic substances on earth and can be the cause of some pretty nasty skin diseases – flea also ingest blood with every bite, so a severe infestation can cause anaemia or even death in small animals.
So far so grim. And it gets worse! The biggest problem when trying to control fleas is that they breed in huge numbers. Once on the pet, the adult fleas take a bite and mate and within 24-48 hours, the female starts laying her eggs, typically 200 over a period of 5 days!! These eggs then fall off the animal wherever it goes in the house, which is why experts agree that an integrated approach to flea control is the best where one type of insecticide is used to kill the eggs and another to kill fleas on the animal. More of that later.
After 4-12 days, the flea eggs hatch into larvae which move downwards and away from the light. Popular areas are deep in the carpet pile and areas where the animal rests but they are able to crawl up to 20 feet while in this stage of their lifecycle! Another few days later and the lovely little larvae spin protective cocoons around themselves and develop into adults. Aside from a blowtorch, at this stage in the lifecycle there is nothing that will get to the fleas inside the cocoons thus rendering pupae impervious to insecticides.
Once the fleas hatch, they can jump onto a pet and begin feeding within 7 seconds! And once they’ve landed, they’ll stay there until they’re removed by grooming or die and adult fleas only account for about 5% of a typical flea infestation at any one stage (the rest being eggs, larvae and pupae.)
Most experts agree that the most effective flea control uses two different approaches (and therefore insecticides) one to kill actual live fleas on your pet and one to stop any reproduction i.e. eggs being layed around the house. Have a look here for various popular brands of flea treatments and household sprays and let us know what you’ve used!