Pest Control Moray Anderson Technical Director Killgerm Group.
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Transcript of Pest Control Moray Anderson Technical Director Killgerm Group.
Pest Control
Moray AndersonTechnical DirectorKillgerm Group
Pest Control
Rodents
Insects
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
Simple Steps to Effective Auditing
• Pest activity
• Hygiene/housekeeping
• Proofing
• Storage
• Monitoring points
• Fly control units
• Paperwork
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?
FREQUENCYOF RODENT BAITING
• Monthly?• Fortnightly?• Weekly?• Continuous pest
activity needs riddance programmes in place
• Non-infested sites need proofing
• Not just bait checking
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”
Signs of Activity …Rodents.
• Nests• Damage• Burrows• Contamination• Smell
• Droppings• Smears• Foot prints/tail
swipes
Nest - mouse
Nest - rat
Mouse damage
– Gnawing cables.
Rat damage
Burrows
Bait and mouse droppings.
Rat droppings
Footprints/Tail Swipes
Smears
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.
Monitoring/Control points
Rodent bait boxes
CONDITION
• Old stale bait• Water-logged bait• Baits damaged by
insects/slugs• Unsuitable bait
containers (spiders’ webs and “wobbly” bait boxes, etc.)
FORMULATIONS• Vary the products
– Grain bait– Block bait– Soft/pasta bait
OR – Traps– Tack boards– Gels and dusts
APPLICATION• Cardboard• Plastic• Box• Tray• Loose
Effective auditing
Insects
Signs of Activity …Insects.
• Live Insects • Bodies• Damage• Contamination
• Webbing, etc.• Trails in dust• Disease
Check Monitoring Devices where present
Insect Pests in Food Premises(CIEH booklet)
• Dermestid beetles
– skin feeders• birds nests• dead animals• dog and cat food
• 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
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
Houseflies
– The housefly (Musca domestica)
• Mechanical vectors of many different and varied pathogens such as
– bacteria– protozoa– viruses– helminth eggs
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
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
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.
““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