Pest Control Moray Anderson Technical Director Killgerm Group.

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Pest Control Moray Anderson Technical Director Killgerm Group

Transcript of Pest Control Moray Anderson Technical Director Killgerm Group.

Page 1: Pest Control Moray Anderson Technical Director Killgerm Group.

Pest Control

Moray AndersonTechnical DirectorKillgerm Group

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Pest Control

Rodents

Insects

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Pest Control What to look for when auditing premises:

Rodent pests - signs of activity - baiting strategies

Insect pests - signs of activity- potential for disease transfer

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Simple Steps to Effective Auditing

• Pest activity

• Hygiene/housekeeping

• Proofing

• Storage

• Monitoring points

• Fly control units

• Paperwork

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Paperwork.

• Reports…are they clear and accurate?• Routine visits….are they frequent and

evenly spaced?• Follow up visits…. correct intervals?• Pesticides….type and use recorded?• Risk/COSHH assessments carried out?• Signatures….by technician and client?

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FREQUENCYOF RODENT BAITING

• Monthly?• Fortnightly?• Weekly?• Continuous pest

activity needs riddance programmes in place

• Non-infested sites need proofing

• Not just bait checking

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Effective auditing

Pest Activity…….(Infestation?)

“A breeding population of pests in an area where its

presence will be detrimental to humans, their activities or their

health”

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Signs of Activity …Rodents.

• Nests• Damage• Burrows• Contamination• Smell

• Droppings• Smears• Foot prints/tail

swipes

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Nest - mouse

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Nest - rat

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Mouse damage

– Gnawing cables.

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Rat damage

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Burrows

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Bait and mouse droppings.

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Rat droppings

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Footprints/Tail Swipes

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Smears

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Home range…• Rat…Has a large home range, 15-30 metres, but in

rural populations can forage for two or three miles in search of food.

• House mouse…Very territorial, small home range. Typically 3-6 metres.

The common rat has the behavioural characteristic called neophobia.

This neophobic re-action makes them very wary of new objects placed in their territory.

House mice are less “nervous” and will be more likely to explore new objects.

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Monitoring/Control points

Rodent bait boxes

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CONDITION

• Old stale bait• Water-logged bait• Baits damaged by

insects/slugs• Unsuitable bait

containers (spiders’ webs and “wobbly” bait boxes, etc.)

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FORMULATIONS• Vary the products

– Grain bait– Block bait– Soft/pasta bait

OR – Traps– Tack boards– Gels and dusts

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APPLICATION• Cardboard• Plastic• Box• Tray• Loose

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Effective auditing

Insects

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Signs of Activity …Insects.

• Live Insects • Bodies• Damage• Contamination

• Webbing, etc.• Trails in dust• Disease

Check Monitoring Devices where present

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Insect Pests in Food Premises(CIEH booklet)

• Dermestid beetles

– skin feeders• birds nests• dead animals• dog and cat food

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• Larder beetle– Dermestes lardarius

– Life cycle– Egg 2 – 9 days (100 – 700 per

female)– Larva 35 – 80 days– Pupa 8 – 15 days– Adult 18 months

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Insect Pests in Food Premises

• Tribolium confusum, confused flour beetle.Egg 4- 30 days (950)Larva 15 – 98 daysPupa 5 – 22 daysAdult 1.5 yrs

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Houseflies

– The housefly (Musca domestica)

• Mechanical vectors of many different and varied pathogens such as

– bacteria– protozoa– viruses– helminth eggs

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Houseflies

– Outbreak of enterohaemorrhagic colitis – Outbreak occurred in nursery school in

Japan– an epidemiological survey isolated

Escherichia coli O157:H7 (EHEC-O157)• EHEC-O157 isolated from houseflies collected in

the school• EHEC-O157 isolated from patients

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Houseflies

– The bacteria persist for a number of days but also proliferate – how?

– Proliferation of EHEC-O157 takes place on the mouthparts of the fly:

• kept moist by repeated regurgitation of gut contents, saliva and frequent tasting of liquid nutrients.

• labellum provides perfect environment for proliferation of EHEC-O157.

• labellum of flies is usually retracted

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Houseflies

– These results suggest that houseflies are not simple mechanical vectors of EHECO157.

– For this type of transmission, a new technical term, bioenhanced transmission, was coined.

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““Drain”Drain” flies flies • F. Psychodidae Owl midges• F. Sciaridae Fungus flies• F. Drosophilidae Fruit flies• F. Phoridae Scuttle flies• F. Sphaeroceridae Lesser dung

flies• F. Sepsidae