Hey Mac, hope you're well.
I needed this post! My cat doesn't have much of a problem with fleas as he stays indoors but I'd been taking him for flea drops every month to the vets. Problem is, he's allergic to all the different drops and they make his hair fall out so I've stopped completely with flea treatments.
I will now hunt for powder and give this a try.
Stay healthy and happy and best wishes to you and your family.