Dog and Flea Problem! Please Help!?

Set off flea bomb in your house you can get them at a farmers coop. Then the vet will have a drop to but on your dogs back between the should blades that will be a heart worm treatment, fleas and intestinal worms. The cost will be close to $100 for the meds and a heart worm test will not be included. The drops are a 6 month supply.