Aquariums, Reptiles and Birds During a Treatment

Households booking a treatment mention the dog. Almost nobody mentions the fish tank, the parrot or the gecko in a vivarium, and those are the animals for which the risk is highest.

All three are far more sensitive to insecticides than mammals, for reasons of physiology rather than dose, and all three need specific handling before anyone starts.

Fish and aquatic animals

Pyrethroids, which are the most widely used insecticide class in this market, are extremely toxic to fish and aquatic invertebrates. An air pump draws room air directly into the water, so an airborne product in the room enters the tank efficiently.

Before any treatment in a room with a tank: switch off the air pump and any external filter that draws room air, cover the tank completely with plastic sheeting or a lid taped down, and leave it covered for the full re-entry period. Then uncover, restore airflow and ventilate the room.

Shrimp, snails and corals

Invertebrates are more sensitive again than fish. A shrimp tank, a planted tank with snails or a marine reef system should be treated as the highest-risk item in the property, and where a substantial treatment is planned in the same room it is worth considering whether the tank can be moved or whether the room can be excluded from the work.

Birds

Birds have a respiratory system far more efficient at extracting substances from air than a mammal\x27s, which makes them highly susceptible to airborne compounds. This is the same physiology that made canaries useful in mines.

A bird should be removed from the property entirely during a treatment, not moved to another room, and should not return until the property has been thoroughly ventilated. Cages should also be covered and removed rather than left in place, and food and water containers replaced before the bird comes back.

Reptiles and amphibians

Reptiles absorb through the skin more readily than mammals and have slower metabolic clearance, which means an exposure that a dog would clear can persist. Amphibians are more permeable again and are the most vulnerable group after aquatic invertebrates.

Remove them from the property where possible. Where a vivarium cannot be moved, it should be sealed and its ventilation isolated, and the room should be excluded from any airborne application.

Cats, dogs and small mammals

Cats are more sensitive than dogs to several pyrethroids because of how they metabolise them, which matters mainly for products applied directly to an animal rather than for a treated room. Both should be out during application and for the stated re-entry period, and food and water bowls should be removed and washed.

Rabbits, hamsters and guinea pigs are small, close to the floor and breathing at floor level, so they should leave the property rather than being moved to another room.

What to tell us when booking

Every animal in the property, including the ones in a spare room. It changes the plan rather than the price: which rooms are treated, which methods are used, what the re-entry period is, and in some cases whether we would recommend the treatment at all in that room.

This is the single most common omission in a residential booking, and it is the one most likely to cause harm.

Where our expertise stops

If an animal shows any sign of distress after a treatment, that is a matter for a vet, and the product data sheet is what they will want. We supply it on request the same day. We can tell you what was used and precisely where; we cannot advise on treatment of an affected animal.

Related reading

See safety with children and pets and re-entry times explained. For pets generally, bringing pets to Vietnam. On airborne methods, when fogging is and is not the right tool, and on ponds, water features. Our parent company applies the same protocol in Vietnamese on its residential programme.

Global Pest Control is the English-language arm of Khử Trùng Toàn Cầu, based in Thu Duc City.

Common questions

Can you treat the kitchen if the fish tank is in the living room?

Usually yes, with the tank covered and the pump off, provided the method is gel bait and crack-and-joint treatment rather than misting. Apartments share air between rooms more than people expect, so the covering is a precaution worth taking even when the treated room is elsewhere. For misting anywhere in the apartment, the tank should be treated as if it were in the room being treated.

How long should the pump stay off?

For the duration of the application plus the stated re-entry period, typically four to six hours in total, and most tanks tolerate that comfortably. For a heavily stocked or marine tank, ask your aquatic supplier what it can tolerate, and if the answer is less than the re-entry period, the room should be excluded from the treatment instead.

We have a pond with fish outside. Does that matter?

Yes, for any external perimeter treatment, because runoff into a pond is a genuine risk and pyrethroids are highly toxic to fish. Tell us where the pond is and we will keep the treatment away from it and away from anything draining toward it. For mosquito larvae in the pond itself, Bti is the appropriate product and it does not affect fish.