Here is a user guide for applying the Flea Killer Spot On 2.5 mL for a cat (adapted from general spot-on flea treatment guidance).

Before use, make sure to check the actual product label and if in doubt, consult your veterinarian.

✅ Preparation

• Weigh your cat (approximate weight) so that you ensure the dose is correct. The product label from a Bangladesh seller suggests: up to ~2.5 kg → 1/5 of a 2.5 mL bottle; ~5 kg → ½ bottle; ~10 kg → full bottle.
• Remove any collar from your cat.
• Choose a quiet place where the cat is calm, maybe gently hold the cat or distract with a treat.
• Have the pipette or dropper ready, and check the expiry date and ensure the packaging is intact.

📍 Application steps

1. Open the product pipette or dropper according to instructions.
2. Locate the spot: the back of the neck, between the shoulder blades or upper back, where the cat cannot reach to lick.
3. Part the fur so you can see the skin.
4. Apply the correct amount of medicine directly onto the skin not just the fur, pressing the pipette tip gently to skin and dispensing the liquid. No need to rub it in.
5. After application:
   • Wash your hands thoroughly.
   • Avoid letting the cat be bathed or swim for at least 6 hours (some sources may recommend up to 24 h) to allow absorption.
   • Prevent other pets or children from licking the treated spot until it’s dry.
   • Make a note of the application date, so you know when the next treatment is due.

🗓️ Frequency & follow-up

• According to general guidance: many spot-on treatments are applied once every 4 weeks for cats.
• For this particular product, one Bangladesh listing suggests repeat every 2 weeks if fleas are present/for first time usage.
• But remember: do not overdose. If you’re unsure, treat again only when label or vet says.
• Also treat the environment: bedding, carpets, furniture, other pets—because fleas live in the environment too.

⚠️ Safety Precautions & Warnings

• Use only on cats with the correct formulation. Many dog products contain chemicals (e.g., permethrin) that are toxic to cats.
• Do not apply near the cat’s eyes, mouth, ears, or on broken skin.
• If you notice adverse signs like vomiting, drooling, tremors, weakness, wobbliness, contact a vet immediately.
• Do not bathe or medicate with another topical product at the same spot unless the label allows co-use.
• Keep the product out of reach of children and other animals.
• Do not treat more frequently than recommended—over-treatment can cause harm.

🧾 Summary for you: “how I’ll do it”

• Weigh cat → choose correct dose.
• Remove collar, calm cat.
• Open pipette, part fur at back of neck, apply to skin.
• Wash hands, keep cat dry for 6 h+.
• Note date, treat environment, repeat per instructions (~every 2–4 weeks depending on product & situation).
• Monitor for side-effects.
• Use only product specified for cats.