I trim her whiskers until they aren't visible
Dont dogs need their whiskers..
I also dont suggest using flea shampoo unless they actually have fleas. When I was working at Pet Valu it said on the back of ALL the bottles of flea shampoo no to use unless they have fleas. And it dosent prevent against them so I dont know why you would use it.

If you brush up it loosens the fur better, then rbush down. I also recomend a dog curry comb (its actually a brush though not a comb) especially since you hgave short haired dogs it works really well on removing hairs and dead skin.