Rats & Flies

rats flies
24/02/2020 Rat Control

Rats & Flies

Flies & Dead Rats – Essential Information

Flies are nature’s cleaners and in the UK we have almost 7000 species! Every fly we encounter has a unique lifecycle revealing the precise conditions necessary for its survival. Understanding the conditions a fly requires for survival enables us to break the lifecycle. Breaking the lifecycle of any insect, reliably ends its ability to thrive.

Whenever a mammal dies it very quickly begins to give off odours or gasses that attract insects with larvae adapted to utilizing this new food source.

Never curse the flies because without them the putrid carcass of the dead animal would continue to stink out your home for many months.

How Flies Consume Dead Rats

dead rats mice

Dead Rodents Quickly Attract Flies!

Rats will often die within 48 hours of poison ingestion. Rodents affected by a poison lose their ability to identify with their surroundings. Disorientation prevents the rats from accessing sources of water or escaping. This is why rats often die within the fabric of the building.

Unfortunately, for most people, rodents die in inaccessible places where removal is not possible. The humble fly now becomes nature’s gift to your cleanup operation.

In winter or wet conditions the process of decomposition might take months because low temperatures mean that few flies are available to seek out the carrion (dead animal).

How Dead Rats Are Consumed By Maggots

Where conditions present as conducive to the decomposition process (above 10°C), flies very quickly discover the body and lay clusters of eggs around the oral and ventral (anal) cavities of the body.

Within hours the larvae or maggots hatch and make their way into the body of the rodent to feed on decomposing flesh. In summer a carcass could be completely decimated within 48 hours!

Once fly larvae complete their feeding frenzy, they leave the body to pupate. At this stage, the larvae often fall through light fittings or are found wriggling across floors. If they survive a short wriggle to a suitable pupation site, they pupate and hatch within 14 days.

Flies hatch, in very small but increasing numbers over the course of a few days and then finally the bloom occurs. A fly bloom is the majority of pupated flies hatching together (100 to 1000s) and emerging into your home at once.

Most people spray the hell out of their homes with insecticides that probably do damage to their own health.

The best method for fly removal we have formulated over the years is a simple one. The flies are attracted to light.

If you place a light source close to where flies seem to be appearing and leave it in place overnight, flies congregate close to it. You should now be able to remove them easily. A vacuum with a plastic cylinder offers the chance to suck up the flies where you can then deposit them outside in the garden (no pesticide needed!).

decomposing rat carcass

Rat carcasses could take months to decompose.

Once the fly bloom has gone, any smells coming from the rat should also be gone. If the smell lasts a few more months, then it’s likely the rodent died on or in damp conditions.

Over the next 2 to 6 months, other insects take over. Moth and beetle larvae eat the skin and fur of the rodent. Leaving behind a mummified shadow of the former rat.

What Flies infest Dead Rats?

Blowflies are carrion scavengers. Order Diptera, Sub-order Cyclorrhaphan, Family Calliphoridae. They are what we know as meat flies or Green Bottles (Lucilia) and Blue Bottles (Calliphora).

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