Diseases caused by rats and birds in your roof :
Rats around the house and in offices can be a serious nuisance. They not only cause damage by gnawing on cables, wires and plastic pipes - but they are a serious health risk as well. Rats live on food and rubbish left in open areas, and use buildings - especially roofs - as shelter. Rats can cause fires and electrical shorts by gnawing on cables, water leaks by biting through pipes, and human diseases through their urine and faeces.
Often seen in places where there has recently been demolition or construction work, where rubbish is lying around, in drains, as well as in rural areas, rats are a growing nuisance. With the abundance of food available, rats are less likely to take poisoned bait.
The average lifespan of a rat is 18 months and one pair can produce a colony of 2,000 rats in a year. In order to reproduce at such an alarming rate, up to 30% of the female rat population is pregnant at any time. Females become sexually mature at just 8-12 weeks, gestation is between 21 and 23 days, and females are able to conceive whilst suckling a previous litter, often mating within 18 hours of giving birth. They can breed throughout the year if the weather is mild and there is plenty of food. Up to 13 litters are possible each year, each one consisting of 7-9 young.
They eat the equivalent of 10% of their body weight daily, consuming rubbish, leftover dog food, bird food and even dog excrement.
Rats are largely nocturnal but will feed in the day time if there is enough food laying around in streets or alley ways. So if you see a rat during the day time it’s probably because it’s been feeding on dumped household waste.
House Dust Mites and associated diseases :
Adult house dust mites are so tiny they can sit on the tip of a pin. They have 8 legs and look a bit like a bag of clear jelly. An adult has a short life span of about 10 to 12 weeks. A healthy female can lay up to 3 eggs a day. After 6 to 12 days the egg will hatch producing a six-legged larva which will feed and then pass through 2 nymph stages before emerging as an adult.
House dust mites are scavengers that have lived on earth for 23 million years. They live in nest sites of warm blooded animals such as rats, birds, and humans. To help them survive they have evolved a clever way to recycle food. Mites use their droppings as a form of nourishment- and can eat them up to three times over.
Signs that Rats are present
Droppings – 10mm spindle shaped, usually round corners • Unusual smells – a longstanding problem can create a ...Read more
How to get rid of Rats
Cover your rainwater and waste water U-traps (gullies) with mesh and seal up sewer slabs so that the Norway Rat will find no openi ...Read more
Some diseases caused by rats, rat droppings, rat urine and rat saliva
Hantavirus Pulmonary Syndrome (HPS): Hantavirus pulmonary syndrome (HPS) is a deadly disease transmitted by infected rodents ...Read more
Some diseases caused by birds and in particular - Pigeon Droppings
Histoplasmosis is a disease caused by a fungus, which grows in pigeon droppings. It also grows in soils and is found througho ...Read more
Allergies and the House Dust Mite
Exposure to house dust mites is recognised as a major cause of allergies worldwide. Common allergic diseases are asthma, rhiniti ...Read more
Types of Mites
Domestic mites – are all mites found in the indoor environment that are capable of causing human sensitization. Sensitizatio ...Read more
The Biology of the House Dust Mite
Dermatophagoides pteronyssinus is a tiny nest dwelling mite that scavenges on discarded skin scales in damp, dark environment ...Read more
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