> Carmenie asked about screened bottom board construction

I converted OAC pollen traps into screened bottom boards by turning them
upside down,  tacking thin strips of wood onto the bottom,  using restaurant
trays for testing tray(supported by thin strips of wood mentioned above) and
self adhesive shelf paper for sticky boards(sticky side up).

Bob Darrell
Caledon Ontario
Canada
80W44N

PS: Carmenie asked about recycling numbers on pails.  I checked my cupboard
and found food containers with all of the numbers 1-7.  Motor oil comes in
containers labeled 2, so you can't use these numbers to guide you to safe
food grade containers.  Does anyone have accurate info on plastic pails?