Making a homemade lemon flea spray is easy, and you don’t need a lot of ingredients or supplies. You will need several hours, however, because the lemons have to steep in the water overnight. The only supplies you'll need are:  Knife Fork Large pot with a lid Strainer Large bowl Funnel Large spray bottle Slice the lemons into disks that are one-eighth inch (3 mm) thick. Place the slices into a large pot. Use a fork to mash the lemons a little so they release some of their juices. The active ingredient in citrus fruits that deters and kills fleas is found in the rinds, and juicing the fruit with a fork will also help to break up the rinds. Add the water to the pot with the lemons. Put on the lid, and bring the mixture to a boil over medium-high heat. When the water comes to a boil, reduce the heat to medium and let the lemons simmer in the water for 30 minutes. When the lemons have simmered in the water for 30 minutes, remove the pot from the heat and set it aside. Let the lemons soak in the water overnight, or for about eight hours. When the lemon water has cooled and soaked overnight, remove the lemons from the water. Set a strainer over a bowl and pour the lemon water through the strainer. Once the lemons have been strained, you can discard them. Pour the vinegar into the bowl with the lemon water and stir to combine. Place a funnel inside the neck of an open spray bottle, and pour the mixture into the bottle. Attach the spray top for easy application. Shake before each use. The best vinegar to use in this recipe is either distilled white vinegar or apple cider vinegar.

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Write a summary of the previous text in Vietnamese:
Tập trung các nguyên vật liệu. Cắt và ép nước chanh. Đun sôi chanh trong nước. Ngâm chanh trong nước. Lọc bỏ chanh. Cho thêm giấm trước khi rót vào bình xịt.