There are several home remedies that can help kill fleas on cats instantly. Here are some of the most effective ones:

• Lemon juice: Lemon juice is one of the most effective natural flea killers. You can spray your cat’s bedding with a solution made by boiling a cut lemon or two and then draining the liquid before transferring it to a spray bottle. You can also use lemon juice to make a spray that you can apply directly to your cats coat.

• Dish soap: Even the most gentle formulations of dish soap have proven to be very effective at exterminating fleas. The dish soap breaks down the flea’s exoskeleton and kills them within minutes, even after it’s been diluted in water. Simply wet your cat’s coat and gently lather the dish soap into his or her fur before rinsing.

• Salt: A little bit of table salt can also do the trick, as it helps dehydrate and kill the fleas on your cat. You can sprinkle it on your cats coat or on your carpet, or mix it with water to treat hard surfaces.

• Apple cider vinegar: Diluted apple cider vinegar in water may remove fleas from your pet’s fur and skin naturally. You can mix it in their water or food, or put it in a spray bottle and apply it directly to your cats coat.

• Lavender: Lavender is a powerful, fast-acting agent against fleas. You can let some lavender steep in water overnight and then spray the liquid on your cats coat.

Its important to note that while these home remedies can be effective, they may not work for severe flea infestations. In such cases, its best to consult a veterinarian for professional treatment options.