Hello .. Rich here .. lest see if I can help you with this
we used to use bakers yeast to repel the fleas from our pets .. I do not know how or why it works .. but feeding them a bit of the block yeast periodically does keep the fleas off them
for the yard you can use Ivory detergent in a hose end sprayer .. and spray the yard .. also a good repellant / killer is diatomacious earth, pool filter product. sprinkle it all over the yard
Thank you I wil surely try these options...praying it works for my dogs, they are my babies.