Will baking soda still kill fleas if mixed with water?

Baking soda can help dehydrate and kill fleas when applied in its dry form, as it can absorb moisture from the fleas' exoskeletons. However, when mixed with water, its effectiveness is significantly reduced since the moisture prevents it from having the dehydrating effect. For best results, it's advisable to use baking soda as a dry powder sprinkled in areas where fleas are present.