The native nematode STEINERNEMA KRAUSSEI, sold as the product NEMASYS Vine Weevil killer, attacks the larvae underground, killing them within a few days by infecting them with bacteria.
  Minimum soil temperature needed 5C (41F). Treat protected crops any time larvae are present and it is warm enough. Outdoors late August-October is the best time to treat, while larvae are still small, but any missed then can be treated in March and April .
  The nematodes cannot attack adult beetles.

Small pack (treats 12 square metres or up to 160 pots) £10.95 including VAT.  Medium pack (treats 100 square metres) £29.95 incl. VAT.   Large pack (treats 500 square metres) £90 + VAT

Pack size 12 sq.m. £10.95 100 sq.m. £29.95