Pest control.pdf
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Transcript of Pest control.pdf
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UNIVERSITAS GADJAH MADA
Pest Control
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UNIVERSITAS GADJAH MADA
Definition of a Pest
A pest is anything that:
– competes with humans, domestic animals, or desirable plants for food or water.
– injures humans, animals, desirable plants, structures, or possessions.
– spreads disease to humans, domestic animals, wildlife, or desirable plants.
– annoys humans or domestic animals.
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FOOD MANUFACTURING QUALITY CONTROL
regular basis and supply shipments must adhere to quality standards before they are accepted
Incoming materials are closely inspected and must be completely free from insect infestation before being accepted
Raw materials are segregated and stored in areas that are monitored in an ongoing manner for any deterioration
Processing temperatures are high so that the various stages of insects which may be present are entirely destroyed
During processing, and before packaging, products pass through various critical control points determined by a HACCP (Hazard Analysis Critical Control Point) system
During packaging, products encounter additional control points before they are containerized and palletized
Products are usually stretch wrapped before storage (finished food product is free from the various stages of insects and other pests)
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UNIVERSITAS GADJAH MADA
Types of Pests
• Insects (insecticides)
– beetles, caterpillars, aphids
• Insect-like organisms
– spiders, ticks, mites
• Microbial organisms (fungicides)
– bacteria, fungi, nematodes, viruses, mycoplasmas
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UNIVERSITAS GADJAH MADA
Types of Pests (con't)
• Weeds (herbicides)– plant growing where it
is not wanted
• Mollusks– snails, slugs
• Vertebrates (rodenticides, predicides)– rats, mice, birds,
coyotes
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UNIVERSITAS GADJAH MADA
Pest Control
•Control a pest only when it is
causing or is expected to cause
more harm than is reasonable to
accept.
•Use a control strategy that will
reduce the pest numbers to an
acceptable level.
•Cause as little harm as possible to
everything except the pest.
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UNIVERSITAS GADJAH MADA
Threshold Levels
Levels of pest populations
at which pest control
action needs to be taken to
prevent the pest from
causing unacceptable
injury or harm.
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UNIVERSITAS GADJAH MADA
Pest Monitoring
• What kinds of pests are present?
• Are the numbers great enough to warrant control?
• Have the control efforts successfully reduced the number of pests?
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1. Registered sanitarians, hygienists or other third party inspectors
usually audit the entire plant sanitation and pest management
programs periodically, sometimes on an unannounced basis.
2. The Good Manufacturing Practices (GMP's) outline many other
steps to perform.
3. Employee GMP training provides ongoing facility awareness of
these important requirements
4. Warehouses where food products are stored are checked for
compliance to these GMP‘s
Monitoring Pest Program
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Pest control program
Pest control procedures
Record keeping
Responsible individuals
DeviationCorrective measures
Verification and
validation
Standardization
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UNIVERSITAS GADJAH MADA
Avoiding Harmful Effects
• Choose the pest control method that will best control the pest with the least harmful effect to the environment.
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UNIVERSITAS GADJAH MADA
Integrated Pest Management (IPM)
Is the combining of appropriate pest control tactics into a single plan to reduce pests and their damage to an acceptable level.
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UNIVERSITAS GADJAH MADA
Integrated Pest Management (IPM)
To solve pest problems:
– identify the pest,
– is control needed,
– what controls are available,
– evaluate the risks and benefits,
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Need to determine:
• What mix of pests are present?
• What attracts the pest?
• What are the particular habits of the pest?
• What are the most effective control measures to control or eliminate the pest?
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UNIVERSITAS GADJAH MADA
To solve pest problems (con't):
– choose a control strategy that will be most effective and cause the least harm to people and the environment,
– use each tactic in the strategy correctly,
– observe Local, State, and Federal laws.
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• Exclusion of pests• Removing food sources
by good practices• Controlling pests with
appropriate methods• Specific procedures /
records
Integrated Pest Management (IPM)
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UNIVERSITAS GADJAH MADA
• Natural Controls
– climate
– natural enemies
– natural barriers
– food and water supply
– shelter
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Integrated Pest Management (IPM)
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UNIVERSITAS GADJAH MADA
Applied controls
– host resistance
• resistant varieties
– biological control
• natural enemies
– cultural control
• plowing, crop rotation, fertilizing, etc.
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Integrated Pest Management (IPM)
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UNIVERSITAS GADJAH MADA
Applied controls (con't)
– mechanical control
• traps, screens,
fences
– sanitation
• remove crop
residues,
cleanliness
– chemical control
• use of pesticides
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Integrated Pest Management (IPM)
1. Keep doors closed / tight fitting• Minimize gaps• Use door seals / self closers
2. Keep windows screened / closed3. Screen air inlets / exhaust
openings4. Use air curtains / strip curtains5. Netting / eliminate perches for
birds6. Eliminate cracks / holes in walls
• Small cracks harbor insects• New construction often
creates spaces
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UNIVERSITAS GADJAH MADA
22 Dec 07 18
Pest infestation checks
• Watch for droppings / tracks
– Indicate type of pest present
– May lead to entry points / nests
• Watch for product or container damage
– Indicate type of pests present
• Note presence of dead pests
– Baits are effective
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UNIVERSITAS GADJAH MADA
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Capture or destruction
Traps work by:
• Attracting the pest
– Attractants vary with pest (smell / curiousity)
• Confine the pest
– Trip mechanisms / sticky pads
• Kill the pest
– Baits (outside plant)
– Mechanical levers / electric current
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UNIVERSITAS GADJAH MADA
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Rodent control
• Use of bait stations / traps most common
• Place traps inside production areas
– Sticky pads for small rodents
– Check & empty weekly (min.)
• Bait stations in non-food areas
– Use approved baits only
– Place in secured station (seal / lock / strap)
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UNIVERSITAS GADJAH MADA
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Bird control
• Eliminate roosts or nesting sites
• Minimize food sources outside of bldngs
– Landscape plants can be attractive
– Garbage
• Use netting or screens under eaves or structures open to outside
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UNIVERSITAS GADJAH MADA
Insect control
• Physical– UV light attracts insects
– Mount at right height / location
– Charged electric grids kill insects
– Sticky pads hold insects after impact
• Chemical– Handle pesticides with care
– Use only approved chemicals
– Don’t contaminate food
– Use correct methods to target pests
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UNIVERSITAS GADJAH MADA
Working with Contractors
• Pest control personnel must be knowledgeable / trained / licensed
• Draw up a plan for trap / bait placement
• Specify reporting to be done
• Hold contractor accountable by verification
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UNIVERSITAS GADJAH MADA
22 Dec 07 24
Employees and Pest Control
• Don’t leave garbage lying around
• Replace traps that are out of place
• Place your lunches in designated areas only
• Let your supervisor know if you see evidence of pests
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UNIVERSITAS GADJAH MADAPest Control Failures
• incorrect pest
identification
• incorrect pesticide
• incorrect dosage
• incorrect application
method
• pest is resistant
pesticide
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UNIVERSITAS GADJAH MADA
Thanks....