Strandfontein sits right on the False Bay shoreline at the southern edge of the Cape Flats, with sand dunes on one side and Mitchells Plain on the other. It is a quieter, more settled suburb than many people assume, and the pest picture is shaped heavily by sand, wind and the wetlands next door.
Crawling insects in Strandfontein: what we see
Black and Argentine ants nest in the sandy soil right up against foundations. German cockroaches are mostly a kitchen problem, while the odd scorpion or spider comes in from the dune scrub.
Most homes are freestanding brick houses on modest plots, many extended over the years with back rooms, garages and enclosed stoeps. Those add-ons often leave small gaps where new walls meet old ones, which mice and cockroaches use. There are also shops and community facilities near the main roads and the pavilion area.
The Strandfontein wastewater works and the birding area beside it hold large open ponds, so mosquitoes and midges are part of life here, especially on still evenings. Loose Cape Flats sand blows in on the South-Easter and drifts against walls and under doors. Winter rain can leave low spots waterlogged for weeks.
Mosquitoes are the complaint we hear most in the warmer months, followed by ants that nest easily in the sandy soil. Rats and mice are common where there is open land and dumping nearby. Fleas, flies and German cockroaches round out the regular calls.
How to tell you have a problem
- Clothing, curtains or linen made from cotton, linen or silk have small holes or thinned patches.
- Silvery, fast-moving insects are seen when you lift boxes, books or linen.
- Yellowish stains or tiny pepper-like droppings are left on paper and shelves.
- Shed scales and skins collect in drawers, cupboards and bathroom corners.
Fishmoths do not bite or spread disease, but they cause slow, steady damage. They eat the glue in book bindings and wallpaper, the starch in fabrics and paper, and the surface of photographs and documents. For offices, schools, libraries and archives, they can damage records that cannot be replaced. Their presence is also a strong clue to damp or poor ventilation that may be causing other problems in the building.
Something most people miss
Fishmoths are harmless to children and pets, which means you can take your time and choose a gentle, targeted treatment rather than anything heavy-handed.
Many people think fishmoths only eat paper. They also go after the glue in wallpaper and book bindings, starch in fabrics, and even dried food crumbs and dead insects in cupboards.
Our process, step by step
Fishmoths often live in roof spaces, wall voids and behind cornices, so a fine insecticidal dust blown into the ceiling void is one of our most effective tools. Inside, we apply a targeted residual treatment into cracks, cupboard corners, skirting gaps and behind bookshelves rather than spraying open surfaces. Fishmoths are long-lived and lay eggs in hidden cracks, so treatments that keep working for a while are more useful than a quick knockdown. We pair the treatment with advice on damp, ventilation and storage, because changing the conditions is what stops them coming back.
Want the full step-by-step? See how our fishmoth control service works.
Keeping them out afterwards
- Improve ventilation in bathrooms and laundries with an extractor fan or by keeping a window open after showers.
- Avoid stacking old newspapers, magazines and cardboard boxes in cupboards for long periods.
- Fix leaks under basins, around geysers and in the roof, since fishmoths need moisture.
- Store books, documents and photographs in sealed plastic boxes, not cardboard, especially in garages and storerooms.
- Vacuum regularly inside cupboards, along skirting boards and behind furniture to remove eggs and food sources.
Pricing, honestly
The price depends on the size of the property, how many rooms and cupboards are affected, and whether the roof space needs to be treated. Easy access to the ceiling void keeps the job simpler, while a home with lots of built-in cupboards and shelves takes more time. Offices, archives and storerooms with large amounts of paper are quoted separately, and every quote is free.
Fishmoths are active all year because they live indoors, but Cape Town's damp winters make them more noticeable as moisture rises in roofs, walls and cupboards. Grey silverfish in the roof space may become more visible in summer when the ceiling heats up and pushes them down into the rooms below.
Frequently asked questions
Why are fishmoths falling from my ceiling?
That usually means there is a population in the roof space. Treating the ceiling void with a dust is the most effective way to deal with it.
Why do ants keep coming back even after I spray in Strandfontein?
Surface spray kills the workers you can see, but the nest sits in the sand under or beside your foundations. Baiting and treating the nest area works far better than repeat spraying.
Are fishmoths and silverfish the same thing?
Yes. Fishmoth is the common South African name for silverfish, and it covers a few related species, including the grey silverfish common in Cape Town.
Are the mosquitoes in Strandfontein coming from the sewage works ponds?
Partly. The ponds and the wetland around them are a big breeding source, but water in gutters, pot plants and blocked drains at your own home adds to it, and that part we can help you control.
Do you come out to Strandfontein for fishmoth control?
Yes. Strandfontein is part of our regular Cape Flats route, along with Mitchells Plain, Pelican Park, Lotus River, Grassy Park. Most bookings are done within about 48 hours, and after-hours visits can be arranged.
How long does a fishmoth treatment last?
Our treatments carry a minimum 3-month guarantee. Fixing damp and changing storage habits makes the result last much longer.
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