MAGGOTS

I recently left my basement window open, and when I went down there the following day I noticed a bird in my basement had gotten in through the window. I am really afraid of any living creature that isn’t human or a cat. So I closed my basement door until I could find someone to help me get the bird out. The next day I got help but we did not see/hear the bird anymore so I assumed it must have found it’s way out. 2 days later I went down to wash clothes and smelled an awful smell. I figured it had to be the bird dead somewhere, which it was. When I found it it was crawling with FAT maggots. I got help disposing of it and the maggots, then threw anything that was near it in the trash. I then washed that area of the floor with bleach. My question is, can/will the maggots wander away from the dead bird? Or do they stay near it? Do they lay eggs? If so how can I get rid of all the eggs? By disposing of the bird and every visible maggot, am I in the clear? If I bleach everything in the basement, will I be rid of them? Someone please help me I am a prisoner in my own home afraid to enter my basement. I can not afford to hire an exterminator. Thank you very much.