this recipe here and a recipe I was given via Twitter (which unfortunately I forget who gave it to me, but thank you!) which used grated dish soap.
I used this spray bottle:
Minced garlic out a jar:
Normal cheap cooking oil:
And dishwashing liquid:
Meanwhile, before I turned the heat on, I put the kettle on to boil. I turned the stove on and gave the garlic a good stir to evenly disperse it. When it just started to fry, I got the now boiled kettle - how good is my timing? so good! - and filled the saucepan to about 1/3 with boiling water:
I let it bubble until everything smelled of garlic, even my hopes and dreams, then I pulled it off the stove.
I put about this much dishwashing liquid in the bottom of the spray bottle:
And I, being me, got impatient and balled up the paper towel and gave it a squeeze to help it along and the paper towel burst and now I have some garlic bits in it anyhow, but not nearly as many as I would have.
I went outside and sprayed my carrots liberally. I'll have to do that again every time I water them and every time it rains. I'll let you know how they go.