The Helderberg basin runs from the mountain down to False Bay, taking in Somerset West, Strand, Gordon's Bay and the farm land in between. It is a big, varied patch, so the pests change a lot depending on whether you are on a vineyard edge, in a security estate or in a beachfront flat.
Spider Control by suburb
We cover all 5 suburbs on our Helderberg route. Each suburb page covers what we find there and what works for those streets and buildings.
Crawling insects around Helderberg
Argentine ants trail through homes all summer, and scorpions and rain spiders show up in mountain-side gardens. Coastal flats along Beach Road deal with German cockroaches.
There is everything here: older family homes in Somerset West, high-rise flats along the Strand beachfront, large security estates on the slopes and smallholdings and farm buildings out towards Firgrove. Estates with lots of garden space and water features bring mosquitoes and rodents, while seafront flats deal more with cockroaches and pigeons. Farm sheds and stables have their own fly and rodent pressure.
Rats and mice around estates and farms, Argentine ants in summer, mosquitoes near water and flies near stables and vineyards are the main ones. Wasps and bees are a frequent call in the warmer months. Coastal flats get German cockroaches and pigeons.
Something most people miss
Brown button spiders have spread widely across Cape Town gardens and leave distinctive spiky round egg sacs. If you see those under garden furniture or a jungle gym, get them removed before children are playing there again.
How to tell you have a problem
- Fresh webs reappear in the same corners, window frames and eaves within days of being brushed down.
- Egg sacs, often round and papery or spiky in the case of the brown button spider, are stuck to brickwork or furniture.
- Cast skins and dead insects collect along skirting boards and in the backs of cupboards.
- You keep finding small pale spiders in bedding, curtains or clothing that has been left folded.
- Outside lights draw a cloud of moths and midges each night with webs built right around them.
How the treatment works
We start by identifying the species, because a rain spider on the wall and a nest of button spiders by the jungle gym call for very different responses. Webs and egg sacs are removed by hand or vacuum first, which takes out a surprising amount of the next generation. We then apply a residual spray or a fine insecticide dust into the places spiders actually live: roof voids, behind fitted units, wall cavities, garages, eaves and window reveals, keeping it away from where children and pets play. Where insects are drawing the spiders in, we treat or advise on that food source too, because spiders follow their prey. Finally we point out gaps around doors, vents and pipes that need sealing.
Want the full step-by-step? See how our spider control service works.
Keeping them out afterwards
- Pull beds slightly away from the wall and keep bedding off the floor to reduce night-time bites from sac spiders.
- Shake out shoes, gardening gloves and clothes that have been left on the floor or in the garage before you put them on.
- Keep stacked wood, bricks and old pots away from the house walls, because these are prime spots for button spiders.
- Swap white outdoor bulbs for warm yellow or LED ones so fewer insects gather, which means fewer spiders setting up around your doors.
- Fit fine mesh to vents and seal the gaps around pipes and under doors with sealant or brush strips.
How much will it cost?
The cost depends mainly on the size of the property and how many outbuildings, garages and roof spaces need treatment. A house with a heavy insect problem feeding the spiders takes more work than one with a few webs in the corners. We give a free quote after a quick look or a WhatsApp photo, and contract clients get spiders covered as part of their routine visits.
Spider activity climbs from late spring and peaks in the hot, dry months from January to March, which is exactly when rain spiders come indoors and people start to notice them. Button spiders are most visible in summer around gardens and pools. In the wet winter months many spiders retreat into roof spaces and garages, so a treatment then catches them where they shelter.
Frequently asked questions
Is the rain spider in my house dangerous?
Not really. Rain spiders are big and fast but rarely bite, and the bite is painful rather than dangerous; the kindest option is to catch it under a container and put it outside.
How long does a spider treatment last?
A residual treatment keeps working for a good while, and our treatments carry a minimum 3-month guarantee. New spiders can still wander in from the garden, which is why sealing gaps and fixing outdoor lighting matters.
Do you cover farms and smallholdings around Somerset West?
Yes, we cover the whole Helderberg, including farms, smallholdings and estates. Send us a photo on WhatsApp and we can give you a free quote.
Why do we get more mice in the Helderberg in autumn?
When the vineyards and fields are harvested and the rain starts, field mice lose food and cover and move towards houses. A pre-winter check of door seals and roof gaps helps a lot.
Why do I have so many spiders this year?
Usually because there is more for them to eat. A warm spell, a lot of outdoor lighting or an underlying insect problem will bring spiders in behind it.
Do you come out to Helderberg for spider control?
Yes. Helderberg is part of our regular Helderberg route, along with Somerset West, Strand, Gordon's Bay, Firgrove. Most bookings are done within about 48 hours, and after-hours visits can be arranged.
Office 021 012 5825 · WhatsApp 074 697 2254