Canada approves DeltaGard SC Insecticide, containing deltamethrin

Health Canada's Pest Management Regulatory Agency (PMRA), under the authority of the Pest Control Products Act, is granting registration for the sale and use of DeltaGard SC Insecticide containing the technical grade active ingredient deltamethrin, to control box tree moth on outdoor-grown boxwood.

Box tree moth is an invasive species, which only feeds on boxwood, causing significant damage which can result in unmarketability and lead to plant mortality. Boxwood is a slow-growing and high-value ornamental crop. Box tree moth is a major threat to the Canadian boxwood nursery industry and the export market for Canadian-grown boxwood.

Deltamethrin is the active ingredient in the commercial class product DeltaGard SC Insecticide, which is used to kill various insect pests on turf, greenhouse floriculture crops, and outdoor-grown boxwood. Deltamethrin is a broad-spectrum synthetic pyrethroid insecticide which affects the insect nervous system causing paralysis and death.

The Proposed Registration Decision PRD2023-05, DeltaGard SC Insecticide, containing deltamethrin, containing the detailed evaluation of the information submitted in support of this registration, underwent a 45-day consultation period ending on 11 August 2023. The evaluation found that, under the approved conditions of use, the health and environmental risks and the value of the pest control product are acceptable. Health Canada received written comments relating to the health and environmental assessments during the public consultation period conducted in accordance with section 28 of the Pest Control Products Act.