6/17/19: The instructions for trap modification have been updated and expanded to include pesticide strip and lure placement, funnel insert modification, and sample collection. See "Guidance for modified milk carton trap with funnel insert" in References section.
3/27/19: The milk carton funnel insert is in stock at the survey supply warehouse. Milk carton funnel inserts are required for Dendrolimus pini (Pine-tree lappet) and D. sibiricus (Siberian silk moth) survey. Note that the rain shield or cap of the milk carton trap makes inserting and removing the funnel from the top of the trap difficult. Consider inserting the funnel through the bottom of the trap. This is also the preferred way to check traps. The funnels are reusable, please use for multiple years.
Supply Product Name in the IPHIS Survey Supply Ordering System: Milk Carton Funnel Insert
2/13/19: Starting in the 2019 survey season, modified milk carton traps must be used in combination with the funnel insert. Modified milk carton traps used without the plastic funnel inserted are ineffective for Dendrolimus targets. Without the funnel, the moths are not contained, easily escaping through the large entry ports (2.5 cm wide x 3 cm high), or are not held long enough for adequate exposure to the killing agent, a DDVP strip.
9/14/17: The lure for Dendrolimus sibiricus, Dendrolimus pini - Dendrolimus sibiricus Lure, is also effective for Dendrolimus pini. If Dendrolimus sibiricus is listed as a survey target in a work plan, then Dendrolimus pini must also be listed in the work plan.
The BHT (butylated hydroxytoluene) and tinuvin are stabilizers. The BHT is an anti-oxidant and the tinuvin is a light-stabilizer.