Diep River is a working suburb strung along Main Road and the Southern Line, with family homes behind the shopfronts. Our calls are a mix of household rats and cockroaches and commercial jobs for businesses along the road.
Diep River: what drives crawling insects here
German cockroaches in kitchens and food businesses, Argentine ants trailing in from gardens and fishmoths in old wardrobes are the usual crawling calls.
Most homes are older freestanding houses and semis, with blocks of flats and townhouse complexes tucked in between. Main Road carries shops, takeaways, workshops and small light-industrial units. Older houses with suspended timber floors and outside rooms give rodents hiding places, while the commercial strip brings cockroaches and flies. Rental flats change tenants often, which is when bed bugs and cockroaches tend to arrive.
The suburb sits on fairly flat ground between Constantia's green slopes and the lower-lying flats toward Zandvlei, with small canalised streams running through. Winter rain pushes rodents in from gardens and from the railway reserve. The South-Easter is gentler here than out on the open Flats, so gardens stay fairly sheltered.
Tell-tale signs
- Untidy, tangled webs show up under outdoor chairs, in the meter box or around the pool pump.
- Egg sacs, often round and papery or spiky in the case of the brown button spider, are stuck to brickwork or furniture.
- Outside lights draw a cloud of moths and midges each night with webs built right around them.
- You keep finding small pale spiders in bedding, curtains or clothing that has been left folded.
The vast majority of local spiders pose no real threat to people, and they do a decent job of keeping insect numbers down. Violin and sac spider bites can cause tissue damage that needs medical attention, and button spider venom is neurotoxic, so a bite from one should always be seen by a doctor. In businesses such as guest houses, clinics and food premises, visible webs and spiders lead to complaints and can count against you on a hygiene inspection.
From the technician
Spraying the skirting boards in every room is usually a waste. Spiders spend the day in voids, roof spaces and behind fitted units, so that is where the treatment needs to go.
Our process, step by step
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
- Fit fine mesh to vents and seal the gaps around pipes and under doors with sealant or brush strips.
- Swap white outdoor bulbs for warm yellow or LED ones so fewer insects gather, which means fewer spiders setting up around your doors.
- Keep stacked wood, bricks and old pots away from the house walls, because these are prime spots for button spiders.
- Pull beds slightly away from the wall and keep bedding off the floor to reduce night-time bites from sac spiders.
- Brush down webs regularly and vacuum the corners and the backs of cupboards, which gets rid of egg sacs before they hatch.
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
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.
How do I know if I have violin spiders?
They are light brown with long legs and a darker violin-shaped mark on the front of the body, and they hide in undisturbed storerooms, cupboards and garages. Send us a clear photo on WhatsApp and we will tell you what it is.
Can you treat my Main Road shop in Diep River after hours?
Yes. After-hours and weekend visits are available on request, so the treatment doesn't interrupt trading.
Are the rats in Diep River coming from the railway line?
Often, yes. The railway reserve gives them cover to travel, so homes that back onto it see more activity and benefit from bait stations along that boundary.
Do you come out to Diep River for spider control?
Yes. Diep River is part of our regular Southern Suburbs route, along with Plumstead, Heathfield, Bergvliet, Retreat. Most bookings are done within about 48 hours, and after-hours visits can be arranged.
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.
Office 021 012 5825 · WhatsApp us
