Fleas are creatures known as ectoparasites. This means that they are insects that live on the skin of other animals. This animal is referred to as the host.
Unfortunately, no it doesn’t work! There is no evidence to suggest that baking soda can kill adult fleas. However, it may reduce the number of flea eggs and larvae by drying them out.
So, as we have learned, baking soda is not an effective way to treat a flea infestation. Baking soda can reduce flea numbers for a short while by killing eggs and larvae, but it will not permanently cure the problem.