Not the right tools

Finally making headway re the whitefly on the citrus - numbers are dramatically down. However I've learned that you shouldn't buy a cheap sprayer. It took at least half an hour to get the new sprayer (with wand) working the first day, and the next time I also had awful problems. I then had to tip the Neem mix into the little 1 litre hand sprayer, which promptly broke when I tried to pump air into it. We now have a shiny new McGregor's one, which does look suspiciously like the old cheap one except the wand is brass - hopefully it will prove to be more effective and robust.