This is a cheap and easy way to make a sticky fly trap that can catch tons of whiteflies.
Get a can of Tanglefoot's Tangle-Trap Sticky Coating. I stored this in the greenhouse which may not have been a great idea, as you can see by the amount of rust there is on the can.
Next find some yellow paper. Yellow construction paper works well. I swiped my wife's yellow notepad which also works well. Fold the paper in half and put a crease in it.
Unfold the paper and lay it out flat. Using an official applicator stick, apply a thin coat of goo over the entire piece of paper. Be careful not to get any on your work surface. I recommend that you lay down some newspaper on your work surface. You can see how everything sticks together while applying it.
When you're done, take the paper and fold it in half again. It's helpful to not apply any sticky goo in the area where you will hold the paper with your fingers.
Hang the flypaper in a greenhouse or desired location by tying a paper clip to a string and hanging the string from the ceiling.
- Make sure you don't place it in a location where you walk. I've learned the hard way and caught a trap in my face!