Rosebank is small but packed: student residences, Victorian cottages, the Baxter Theatre and a strip of shops and eateries along Main Road. Turnover of tenants is high, and that shapes almost every pest problem we see here.
Rosebank: what drives biting insects here
Bed bugs move between rooms with luggage and second-hand mattresses, especially early in the academic year. Fleas show up where pets have lived in rentals.
The Liesbeek River runs along the eastern side of Rosebank, with its green belt and walking paths. Winter rain is heavy on this side of the mountain, and the river corridor holds damp and vegetation. It's a natural highway for rats and a breeding spot for mosquitoes.
Bed bugs and German cockroaches are the biggest issues because of shared housing. Rats along the Liesbeek and roof squirrels come next. Fleas and pantry pests pop up in student digs.
Signs to look for
- Small dark mosquitoes resting on shaded walls, under the eaves or behind curtains during the day.
- A high-pitched whine near your ear just as you fall asleep.
- Itchy, raised bites on arms, face and feet that were left outside the covers.
- Day-time bites on the ankles while sitting in the garden, which points to Aedes breeding nearby.
A note from the field
Electric bug zappers attract plenty of insects, but studies have shown that very few of them are mosquitoes. Screens and source reduction do far more.
What happens when we come out
Source reduction always comes first: we walk the property and find every place water collects, from gutters and drains to ponds, water features, plant saucers and covered pools, and tell you which ones to empty, fix or cover. Water that cannot be removed, such as ponds and drains, can be treated with a larvicide or insect growth regulator that stops larvae becoming adults. Adult mosquitoes rest in cool, shaded places during the day, so we apply a residual spray to the undersides of shrubs, hedges, eaves, patio ceilings and other resting areas. For events or heavy problems, ULV fogging can knock down adult numbers quickly, but it only works properly when combined with dealing with the breeding sites.
- Property walk
We check gutters, drains, ponds, pools, water features and containers for larvae.
- Remove or fix breeding sites
We show you what to empty, cover or repair, and clear what we can on the day.
- Treat remaining water
Ponds, drains and sumps that cannot be emptied are treated with a larvicide or growth regulator.
- Treat resting areas
A residual spray goes onto shaded foliage, eaves and patio areas where adults rest.
- Fogging if needed
ULV fogging is used for events or severe cases to reduce adult numbers quickly.
- Follow-up plan
We leave a report and agree whether follow-up visits through summer make sense.
Stopping a repeat visit
- Fit mosquito screens to bedroom windows and use a net over cots in summer.
- Clean gutters after winter so they do not hold water through summer.
- Keep pool water circulating and treated, and drain the water that collects on top of pool covers.
- Empty pot-plant saucers, buckets, bird baths and pet water bowls at least once a week, because larvae develop into adults in about a week in hot weather.
- Stock ornamental ponds with small fish that eat larvae, and keep water features running.
Pricing, honestly
Cost depends on the size of the property, how many breeding sites there are and whether larger water bodies such as ponds or drains need treating. A once-off treatment is priced differently from a programme of visits through the summer season. Fogging for an event is quoted on the size of the area, and the quote itself is free.
Mosquitoes start building up once the weather warms in October and peak from December to March, especially after a wet winter has filled ponds, vleis and gutters. Calm, humid evenings are the worst, while the strong south-easter actually keeps them down on windy days. Numbers drop sharply when the cold, wet winter sets in from about May.
Mosquito Control questions from Rosebank
How do you treat bed bugs in a Rosebank digs with shared rooms?
All connected rooms need to be treated at the same time, otherwise bed bugs just move next door. We'll give you a prep list beforehand and a report afterwards.
Are the treatments safe for fish in my pond?
We choose larvicides suitable for the situation and will tell you if a product is not appropriate for a fish pond. In many cases, fish themselves are the best control.
Do the rats in Rosebank come from the Liesbeek River?
Many do. The river's green belt gives them cover and water, and they move into nearby gardens and drains, especially in winter.
Do you come out to Rosebank for mosquito control?
Yes. Rosebank is part of our regular Southern Suburbs route, along with Mowbray, Rondebosch, Observatory. Most bookings are done within about 48 hours, and after-hours visits can be arranged.
Does fogging get rid of mosquitoes?
Fogging kills adults that are flying at the time, but new ones will hatch from any untreated water. It works best as part of a plan that deals with breeding sites.
Why are there so many mosquitoes this summer?
Usually because a wet winter left more standing water, or a breeding site has developed close by, such as a blocked gutter or an untreated pond.
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