Posted: 29/04/2013 at 20:53
I don't have any experience of using nematodes, but I do use this.
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It is approved by the Soil Association, is organic, and is based on ferric phosphate, is water resistant, and breaks down into fertiliser. And it can be used 365 days a year, whereas nematodes only work April to October, and has no special storage requirements:
http://www.which.co.uk/news/2011/03/slug-pellets-247120/
What I don't understand is why it is not better promoted as a cheap convenient alternative to metaldehyde slug pellets. Is there something I am missing? Is there a problem with it that I am unaware of? Or has it just got a bad name by association - blue pellets etc.?