Alternatives to Methyl Bromide; Integrated Pest Management in Danish Flour Mills Appendix 4Methods to control and monitor pests.
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| Name | Approved in Denmark | Application area | Remarks |
| Natural pyrethrum | Yes | Space- spray undiluted in silo, storage etc. against flying insects |
Pyrethrum is very effective against flying insects, which are killed immediately. There is no long term residual effect. Mostly used to control a local infestation until a residual product becomes active or the area can be fumigated |
| Chlorpyrifos on water basis |
Yes | Used to treat cracks, crevices and barrier/belt method | Chlorpyrifos is used to control insects in and around
buildings. It is odourless and has a long term residual effect. Not to be used on surfaces coming into contact with food |
| Chlorpyrifos Solvent base |
Yes | Used to treat cracks, crevices and barrier/belt method, in areas likely to be wet or washed down | Chlorpyrifos lacquer can only be applied by brush. Is of limited value in mills. The advantage over the water based solution is the long term residual action in damp conditions such as basements and floor drains. |
| Deltamethrin | Yes | For the control of insects on surfaces where insects crawl or land | Deltamethrin is odourless and has a long term residual effect. Not to be used on surfaces where food is handled, apart from the walls and floors of granaries and silos, it is specially useful in old wooden silos, floors etc. |
| Diatomaceous earth | No | Used against crawling insects in their habitats | Diatomaceous earth can have a long term effect under dry conditions. Can be unsightly and is best used in cavities and non visible undisturbed areas. |
| Pheromone traps | Used to lure and trap insects for identification and get a general view of the extent of the infestation Can be used to locate an infestation. | The traps are specific for each species and used for indication only but can help reduce the number of insects. Note in the summer they can attract insects from outside and therefore must be used with forethought. | |
| Sticky traps | Used to trap insects for identification and get a general view of the extent of the infestation | Sticky traps are not species specific and trap all insects coming into contact with the sticky surface. Not all kind of traps are suitable for dusty areas as they become ineffective because of the dust. | |
| Electric insect traps | Where there are flying insects. | Ultraviolet light attracts insects onto a high voltage grill where they are killed. Not to be placed in very dusty areas because of the risk of dust explosions. They can be an excellent supplement in stores, packaging and other less dusty areas. | |
| Biological control with predatory insects | Predatory insects are specific for each species and will e.g. attack the eggs of a certain moth species | At present all insects found in a food factory are considered pests by the authorities and buyers, both pests and so-called utility insects are therefore undesirable. The use of such insects in food factories is now being researched |
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