When to Call Someone and When to Wait

There is no benefit to us in attending a property that needed a drain filled, and there is real cost to a household that waits three months with a growing German cockroach population.

So here is an honest sorting of what justifies a call today, what justifies a fortnight of watching, and what usually needs nobody at all.

Call today

Small pale-brown cockroaches in a kitchen, particularly more than one or any seen in daylight.
Confirmed bed bug evidence — spotting, shed skins or eggs on the bed frame or headboard.
Rodent evidence indoors: fresh droppings, gnawed packaging, or noise in a ceiling at night.
Mud tubes on a wall, a pillar or a foundation.
Anything in a commercial food area, where the delay itself becomes a finding.

What these share is that waiting makes the job larger, more expensive, or harder to contain. None of them improve on their own.

Watch for two weeks

A single large cockroach in a bathroom. Fill every floor drain and see whether it recurs; in most cases it does not, and the drains were the whole story.

An ant trail. Place bait on it, leave it alone through the three-day increase, and see where it is at day ten. Most household ant problems resolve without anyone attending.

A few small flies. Find the source — fruit, a bin, a drip tray, a drain — and the population collapses within days.

A technician treating the refuse area behind a restaurant.

Usually needs nobody

Geckos on a wall, which are eating the insects you mind about. Spiders in a garden. Booklice on a wall in a new building, which are a construction moisture signal that fades as the structure dries. Silverfish in a bathroom, which are a ventilation question.

Ants outdoors in a garden, which are part of the environment here and are neither controllable nor worth controlling. Millipedes at a threshold after heavy rain, which disperse within days.

The photograph rule

Before deciding anything, photograph it with something for scale. A large number of the enquiries we receive resolve at that point, because identification changes the answer — a large brown cockroach and a small striped one lead to entirely different advice, and the picture takes ten seconds.

We would rather look at a photograph and tell somebody to pour water down a drain than attend and charge them for the same conclusion.

One more thing worth doing while you watch: write down the dates. A note on a phone saying what was seen, where and at what time turns two weeks of uncertainty into a short, useful account. It is also the difference between telling a technician that you have seen a few cockroaches and telling them you saw three in the kitchen after 22:00 on four separate evenings, always near the same cabinet.

Why waiting is expensive with some species

A German cockroach female carries an egg case with thirty to forty eggs and the cycle from egg to adult takes about two months here. A population of five in week one is not a population of five in month four, and the treatment required scales accordingly.

Bed bugs behave similarly in a different way: a problem confined to one room is straightforward, and the same problem after three months of somebody sleeping on the sofa is in three rooms.

A technician with a backpack sprayer in a restaurant kitchen.

There is one situation that sits outside all three categories: anything involving a wasp or hornet nest at a property with children or pets. That is not a wait-and-see matter and it is also not a do-it-yourself one, because disturbing a nest without protective equipment is how people get hurt. Keep everyone away from the area and have somebody attend.

The commercial exception

For a food business the calculation is different, because the delay itself is the finding. An auditor reading a report of activity with no dated response two weeks later is looking at a failure of the system rather than a pest problem, and that grades worse than the original observation.

In a commercial setting, call on the day and record the call, even where the technical urgency is low.

Common questions

Will you tell me if I do not need a treatment?

Yes, and it happens regularly — the commonest example is a large cockroach in a bathroom, where the answer is to fill the drain traps and nothing else. A company that finds a reason to treat every enquiry is telling you something about how it operates. We would rather have the customer who calls again in a year than the one who paid for a visit that achieved nothing.

How long should I watch before deciding?

Two weeks for most household situations, which is long enough for a pattern to emerge and short enough that nothing grows substantially. Note dates and locations while you watch, because that record is the most useful thing you can hand over if you do end up calling.

Is there anything I should never wait on?

Rodent evidence in a food preparation area, confirmed bed bugs, and mud tubes. The first is a contamination issue, the second spreads while you decide, and the third indicates a colony that has been damaging the building for some time already. Everything else can generally take a fortnight of observation.