contact insecticide


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contact insecticide

a chemical (e.g. DDT, Malathion) lethal to insects when they alight on a surface coated with the poison. Compare SYSTEMIC BIOCIDE.
References in periodicals archive ?
Inspecting used and second-hand furniture and furnishings and treating them as necessary with a non-residual contact insecticide before they are allowed in a building; and
* IF grubs have appeared in your raspberries in previous years, spray with a contact insecticide at petal fall and again as the fruits start to turn pink.
Or spray the plants with a contact insecticide, but follow the instructions.
Or spray with a suitable contact insecticide, preferably early in the evening to minimise the danger to bees.
Although the majority of damage may now have been done for this year, try to control the remaining beetles using a contact insecticide. Spray at dusk to minimise the risk to pollinating insects such as bees.
If you can catch the attack early in the year regular picking off may suffice, but it is generally easier and more effective to spray with a contact insecticide such as derris, fenitrothion or Sybol.
You can spray with a contact insecticide but it is often easier to inspect the plants regularly and pick off the offending pests.
Aerosols and contact insecticides as alternatives to methyl bromide in flour mills, food production facilities, and food warehouses.
Evaluation of a single application of neonicotinoid and multi-application contact insecticides for flatheaded borer management in field grown red maple cultivars.
These quick movements can make it extremely difficult to apply contact insecticides to help reduce the population.
Development of resistance in beetle Pests of stored grain against phosphine and contact insecticides in Pakistan.