I was looking for some advice on how to safely (for me, the bees and my equipment) inject OA vapors into my hives using Johno's Easy Vap.
Most of my bottom boards are made with PVC so I can't inject through the back rim of the bottom board. I tested a scrap piece of the PVC material and it melted when in contact with the nozzle.
In the videos I watched on youtube it seems normal to inject above the frame rails in the top rim of the box. Maybe my boxes are weird but I don't have room to drill a 1/4" hole up there. It would almost need to be drilled half in the frame rail of the box and half in the bottom of the box above it. I am not opposed to doing that but the boxes would have to be aligned perfectly every time.
I've read some scary stories of people injecting through the middle area of the box and putting the nozzle against the side of frame and having the cap blow off in their face. I also thought that shooting directly between the frames would have the highest risk to the bees.
I have read suggestions to trim the nozzle down to the box thickness (3/4") so you can't hit a frame rail or cut the nozzle end at 45degrees. Are these good options? Is it generally considered safe to inject below the handhold in the middle of the box? Any advice for me?