Have the house bombed the yard sprayed and get the pills and collars from the vets for your animals. Soda and salt will not help your dog. We use the Heartgard and Trifexis. The little guy only likes the Heartgard. I can break up the Trifexis on his food or put it between bread and he will spit out every little bit. I just cover dishes and pots and pans with tarp or stick them in the dishwasher. I don't have carpet, though because my dogs shed so much! We use flea and tick shampoo. DH used Dawn because some one said it was good for fleas. Dried my dogs skin out so bad, wasn't funny. We've been lucky because we keep up on it. Got after a neighbor who was walking their dog and got ready to do his business in my yard. I told him my dogs don't do their business in anyone else's yard so you don't need to let your dog do his business in mine. That is another way your yard get contaminated. When people let theirs do their business in your yard. I'll stop ranting.