Lemon is a great way to repel and kill fleas if you have trouble with them in your home. Many natural flea sprays contain a citrus extract called D-limonene, which repels and kills these biting bugs.

Does citrus repel fleas?

Fleas are known to be repelled by citrus. The juice from a freshly squeezed orange or lemon can be lightly rubbed onto your pet’s fur to ward off the buggers. Take note that oil extracts from lemons and oranges (and any citrus) are not safe for cats and dogs at all.

What will instantly kill fleas?

The most common product used to kill fleas on dogs instantly is Nitenpyram, more commonly known as Capstar. This single-use tablet is administered orally and kills fleas within 30 minutes. It is recommended that you contain your pet in a small area when using Capstar.