Karlsten Silverfish Killer Spray, 500 ml

Karlsten Silverfish Killer Spray is a 500 ml insect-control spray marketed for silverfish. The listing claims contact action and a lasting barrier, while customer feedback is positive about effectiveness but mixed on spray reliability and durability.

At a glance

The manufacturer describes it as a contact-action silverfish spray that leaves a protective barrier.
The listing claims a non-staining formula and no lingering odour.
The seller advises ventilation during spraying and keeping pets and small children away until spraying is complete.

Price

£11.04Save 15%

Reference price: ~~£12.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

500 ml ready-to-use spray format for applying to areas where silverfish are a concern.
Customer feedback reports perceived effectiveness and ease of use, with some saying one application was sufficient.

Technical specifications

6 specifications

Identity
Brand	Karlsten

Product details
Form	Spray
Liquid volume	500 Millilitres
Target species	Insect,Bug
Specification met	HSE
Country of origin	United Kingdom

What to know before buying

Customer feedback is mixed on durability, value and spray performance. Some report the pump stops working after a few uses, while others say the spray works well.
The listing claims no lingering odour, but spraying instructions still require adequate ventilation and keeping pets and small children away during application.

Who is it for?

A good fit for

Buyers seeking a ready-to-use spray marketed for silverfish control.
Those who prefer a spray format and want the listing's claimed non-staining finish.

Less suited to

Buyers who need consistently reliable spray performance, as customer feedback reports mixed results.
Anyone unable to follow the stated ventilation and pet and child precautions.

Karlsten Silverfish Killer Spray, 500 ml · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 1,579 ratings

5 stars65%65%
4 stars18%18%
3 stars10%10%
2 stars3%3%
1 star4%4%

Customer feedback highlights perceived effectiveness, ease of use and little or no smell. Reports are less consistent on durability, value and spray performance, including accounts of the pump stopping after a few uses and of the spray not working. That matters for a 500 ml spray intended for repeat applications if needed. These experiences are customer reports, while the claimed contact action and barrier are product-listing claims.

Positive themes

Customers report that the spray is effective, with some saying one application was enough.
Customers describe it as easy to use and report no noticeable smell.

Negative themes

Some customers report that the pump stops working after a few uses.
Some customers say the spray did not work for them.

Mixed feedback

Customers disagree about how long the product lasts and whether it represents good value.
Spray performance is described both as direct and as ineffective.

Frequently asked questions

What is the product and how much does it contain?

It is a Karlsten silverfish-control spray. The listed liquid volume is 500 Millilitres.

What does the listing claim about its action?

The manufacturer claims contact action against silverfish and says the spray leaves a barrier. These are listing claims, not independently verified results.

What precautions does the listing give?

It advises adequate ventilation, leaving windows open, and keeping pets outdoors and small children away while spraying.

What do customers report about performance?

Feedback highlights perceived effectiveness and ease of use, but is mixed on spray performance and durability. Some customers report pump problems or say the spray did not work for them.