Most spiders found in London homes are harmless and, in small numbers, are actually helpful — they feed on other insects. But a noticeable increase in spider activity, an infestation in a specific area of the property, or the presence of false widow spiders (increasingly common across London in recent years) is a reasonable reason to call in professional treatment rather than just living with it.

Signs of a spider problem worth treating

• A sudden, noticeable increase in spider sightings, particularly indoors during autumn (natural mating season) or in a specific room or area
• Dense cobwebs building up faster than they can reasonably be cleaned, especially in lofts, garages, or sheds
• Sightings of false widow spiders — dark, bulbous-bodied spiders with cream markings, which can deliver a painful bite (though rarely medically serious for most people)
• Spider activity concentrated around a specific entry point, suggesting an established nest or breeding area nearby

Why professional treatment beats DIY spider sprays

Shop-bought spider sprays typically only address individual spiders on contact and don’t affect the insects spiders feed on, meaning new spiders are quickly drawn back to the same area. Professional treatment targets both the spiders present and, where relevant, the insect population attracting them, alongside sealing likely entry points.

Our Spider Control Process

1. Inspection — identifying spider species present (including confirming or ruling out false widows), affected areas, and likely entry points.
2. Treatment — targeted residual insecticide application in webs, corners, and entry points, along with removal of existing webs and egg sacs where accessible.
3. Entry point advice — practical guidance on sealing gaps around windows, doors, and vents that spiders are using to get indoors.
4. Follow-up, if needed, particularly for false widow infestations or larger properties with multiple affected areas.

What does spider control cost in London?

Spider treatment in London typically starts from around £150–£200 for a standard property, with pricing depending on the size of the affected area and whether false widow spiders are present, which sometimes require more thorough treatment. We’ll confirm the exact price after inspection.

Common in These London Areas

Spider call-outs, including false widow sightings, are common across East London and South East London, particularly in gardens, sheds, and garages. Check your area page for local detail, or contact us directly.