has anyone tried this product chap on the allotments said it was the best no pests and results with his vegetables are second too none . looked it up it is not cheap he says well worth it from results .might give it atry next year.
I'd not heard of this until I read your post. It sounds great, what about asking the chap on your site how much he uses in the year. Might give you a better idea of the cost.
I bought two similar ish product earlier in the year but I've not used them properly yet. http://www.allotments4all.co.uk/smf/index.php/topic,66342.0.html