The answer to 'how long does flea treatment last' is that the effectiveness of flea treatment can vary, but typically lasts 1-3 months. Flea treatment products work by killing adult fleas and disrupting the flea life cycle, preventing new generations from hatching and infesting your home. The exact duration depends on factors like the type of treatment, application method, and your home environment.
For example, topical spot-on treatments for pets usually last 1-3 months, while oral medications can provide protection for up to a month. Indoor foggers and sprays may provide 1-2 months of control, while outdoor treatments like yard sprays can last 2-3 months. It's important to follow the product instructions carefully and reapply as directed to maintain protection against fleas.