---
product_id: 164518107
title: "Zero In Knockdown Plug-In Mosquito Killer Refill – Odour-Free, Kills Mosquitoes, Midges, & Biting Insects on Contact - Provides Up to 45 Nights of Protection - 30ml Refill Bottle"
brand: "zero in"
price: "€ 9.72"
currency: EUR
in_stock: true
category: "Zero In"
url: https://www.desertcart.be/products/164518107-zero-in-knockdown-plug-in-mosquito-killer-refill-odour-free
store_origin: BE
region: Belgium
---

# Up to 45 nights of continuous protection Odour-free, fragrance-sensitive friendly Kills mosquitoes & biting insects instantly Zero In Knockdown Plug-In Mosquito Killer Refill – Odour-Free, Kills Mosquitoes, Midges, & Biting Insects on Contact - Provides Up to 45 Nights of Protection - 30ml Refill Bottle

**Brand:** zero in
**Price:** € 9.72
**Availability:** ✅ In Stock

## Summary

> 🛡️ Defend your space, ditch the buzz—mosquito-free nights guaranteed!

## Quick Answers

- **What is this?** Zero In Knockdown Plug-In Mosquito Killer Refill – Odour-Free, Kills Mosquitoes, Midges, & Biting Insects on Contact - Provides Up to 45 Nights of Protection - 30ml Refill Bottle by zero in
- **How much does it cost?** € 9.72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/164518107-zero-in-knockdown-plug-in-mosquito-killer-refill-odour-free)

## Best For

- zero in enthusiasts

## Why This Product

- Trusted zero in brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Odour-Free Comfort:** No unpleasant smells—perfect for fragrance-sensitive homes and professional spaces.
- • **Long-Lasting Defense:** Enjoy up to 45 nights of 8-hour protection per 30ml refill—fewer replacements, more peace of mind.
- • **Instant Knockdown Power:** Targets mosquitoes, midges & biting insects on contact for immediate relief.
- • **Eco-Conscious & Family Safe:** Ethical pest control with minimal environmental impact, caring for your home and planet.
- • **Effortless Plug-In Convenience:** Simply swap the refill in your existing Zero In unit for seamless, continuous protection.

## Overview

The Zero In Knockdown Plug-In Mosquito Killer Refill is a 30ml odour-free insecticide refill designed for use with the Zero In plug-in unit. It delivers fast-acting, contact kill of mosquitoes, midges, and biting insects, covering up to 12m². Each refill provides up to 45 nights of continuous 8-hour protection, combining effective pest control with a fragrance-free formula ideal for sensitive environments. Easy to replace and eco-conscious, it offers a hassle-free, long-lasting solution for maintaining a comfortable, insect-free home or travel space.

## Description

Shop Zero In Knockdown Plug-In Mosquito Killer Refill – Odour-Free, Kills Mosquitoes, Midges, & Biting Insects on Contact - Provides Up to 45 Nights of Protection - 30ml Refill Bottle. Free delivery on eligible orders of £20 or more.

## Features

- Toxic to aquatic life with long lasting effects.
- Use biocides safely. Always read the label and product information before use.
- MOSQUITO KILLER REFILL- Designed to work effortlessly with the Zero In Mosquito Killer plug-in unit, this powerful refill targets and eliminates mosquitoes, midges and biting insects on contact, covering areas up to 12m². Ideal for continuous insect protection at home or while travelling
- ODOUR-FREE FORMULA- Keep your living space comfortable and pest-free with this mosquito killer plug-in refill. This insect killer replacement is formulated without any unpleasant smells, providing effective protection without disrupting your environment. Ideal for those sensitive to fragrances
- LONG-LASTING PROTECTION - Each 30ml refill bottle of mosquito repellent contains Prallethrin and provides up to 45 nights of 8-hour continuous protection. This long-lasting formula means fewer replacements, allowing you to enjoy consistent mosquito defence with minimal maintenance
- EASY TO REPLACE – Remove empty bottle and insert the refill into the existing plug-in unit (ZER740) and plug in for continuous overnight protection. The compact design of this mosquito killer plug-in unit is suitable for any room and makes it simple to maintain an insect-free space
- CARING FOR PEOPLE & THE PLANET – Zero In protects your health and home against Home Pest problems with minimal environmental impact. Zero In products are ethical and welfare-friendly solutions to everyday Home Pest problems that safeguard your well-being. We care for you, your family, and the planet

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07DQZXYQP |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 256 in Garden ( See Top 100 in Garden ) 9 in Mosquito Control |
| Colour | Transparent |
| Customer Reviews | 4.2 4.2 out of 5 stars (807) |
| Date First Available | 19 Dec. 2017 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Guaranteed software updates until | unknown |
| Included Components | KNOCKDOWN MOSQUITO REFILL ZER742 |
| Item Package Quantity | 1 |
| Item Weight | 50 g |
| Item model number | ZER742 |
| Manufacturer | STV International |
| Part Number | ZER742 |
| Power Source | No Power |
| Product Dimensions | 4.5 x 4.5 x 7.4 cm; 50 g |
| Style | PESTICIDE |

## Product Details

- **Item form:** Liquid
- **Item weight:** 0.05 Kilograms
- **Liquid volume:** 30 Millilitres
- **Brand:** Zero In
- **Target species:** Insects

## Images

![Zero In Knockdown Plug-In Mosquito Killer Refill – Odour-Free, Kills Mosquitoes, Midges, & Biting Insects on Contact - Provides Up to 45 Nights of Protection - 30ml Refill Bottle - Image 1](https://m.media-amazon.com/images/I/71UCdEDvC9L.jpg)
![Zero In Knockdown Plug-In Mosquito Killer Refill – Odour-Free, Kills Mosquitoes, Midges, & Biting Insects on Contact - Provides Up to 45 Nights of Protection - 30ml Refill Bottle - Image 2](https://m.media-amazon.com/images/I/414hrH03WQL.jpg)
![Zero In Knockdown Plug-In Mosquito Killer Refill – Odour-Free, Kills Mosquitoes, Midges, & Biting Insects on Contact - Provides Up to 45 Nights of Protection - 30ml Refill Bottle - Image 3](https://m.media-amazon.com/images/I/51h5R1VaySL.jpg)
![Zero In Knockdown Plug-In Mosquito Killer Refill – Odour-Free, Kills Mosquitoes, Midges, & Biting Insects on Contact - Provides Up to 45 Nights of Protection - 30ml Refill Bottle - Image 4](https://m.media-amazon.com/images/I/41SqM8QMbpL.jpg)
![Zero In Knockdown Plug-In Mosquito Killer Refill – Odour-Free, Kills Mosquitoes, Midges, & Biting Insects on Contact - Provides Up to 45 Nights of Protection - 30ml Refill Bottle - Image 5](https://m.media-amazon.com/images/I/41uYEcgC+xL.jpg)

## Questions & Answers

**Q: I really want to use in my sealed garden nursery with 650 plants that I grow and sell. Will this kill or harm them, slow plant growth in any way? 🙏Xx**
A: Thank you for your query. This product is the refill for ZER740 Knockdown Mosquito Killer. This product will just deter/killing flying insects on contact. It will not harm the plants in your nursery. Please ensure no plants are directly positioned in front of the plug in unit however. Please do not hesitate to contact us with any further queries.

**Q: Can it be plugged into a uk shaver socket?**
A: Thank you for your query. If you have an adaptor plug to enable the 3 pin pug on the repeller, and have checked the voltage of the shaver socket compared to the product, this will be fine to use in a UK shaver socket. However, we wouldn't advise you do this as the product will not work very well in a damp room or a room with steam or high moisture. It is best used in a room such as living room, or bedroom, or caravan.  Please do not hesitate to contact us with any further queries.

**Q: Does this fit a boots repel diffuser?**
A: Thank you for your query. Unfortunately we cannot comment on other brands which aren't STV products, This is made for the ZER740 Knockdown mosquito killer. Thank you

**Q: Has anyone found these helpful against carpet/clothes moths**
A: Not sure if they work for those insects however we are currently vacuuming everyday to remove the multiple, a lot, mosquitoes it kills off

## Frequently Bought Together

- Zero In Knockdown Plug-In Mosquito Killer Refill – 30 ml for Plug-In Insect Killer For Home & Travel Lasts for up to 45 Nights
- Zero In Knockdown Plug-In Mosquito Killer - Odour-Free Plug-In Insect Repellent Unit - Kills Mosquitoes, Midges, & Biting Insects on Contact - Provides Up to 45 Nights of Protection - 30ml Bottle
- Jungle Formula Maximum Repellent Aerosol 125ml - Maximum Strength, against Mosquitoes, Biting Insects and Ticks - Up to 9 hrs Protection for Any Destination incl. Tropics- with DEET

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-08-25*