What's an affordable flea medication that works really well for small dogs?

Hi everyone, recently I moved back in with my parents. When I first came, I found that their small dog was infested with fleas. Not only is the dog infested, but our backyard, the living room, bathroom and my room are infested as well. I constantly vacuum my room and clean the house but we keep getting fleas. I have about 80 flea bites on my legs and when I talked to my parents about it they laugh and call me dramatic. I've read to treat the flea infestation the dog must be treated first but I'm unsure which medications are sure to work? I've tried the Ultra Guard drops and flea collar but they don't work. Can someone please give me recommendations? Also, has anyone had the same experience with their home being infested and what did you use to ensure the fleas were dead?