Castaway
A product name for a lumbricide that contained the active ingredient Thiophanate-methyl for the suppression, rather than control, of earthworms but is no longer approved for use.
Castaway Plus
A product name for an insecticide and lumbricide that contained the active ingredients Gamma-HCH and Thiophanate-methyl for the control of leatherjackets and suppression of earthworms but is no longer approved for use.
Chlordane
A contact insecticide which was very effective at controlling earthworms and which is no longer approved (from 31st December 1992) for sale or use in the UK.
Chloride of Lime
A chemical compound which was used during the early and mid-20th Century as a pesticide to expel and kill earthworms, although total control was not achieved.
Chlorpyrifos
A contact insecticide, especially for use in controlling leatherjackets, which is no longer approved (from 2015) for sale or use in the UK.
Clear Cast Green
A liquid earthworm suppressant which can be used to reduce surface casting without harming earthworms. It containers organic sulphur, amino nitrogen and wetting agent and should be applied when earthworms are active near the surface. The application rate is 7 to 20 litres per hectare mixed in 500-1,000 litres of water per hectare. It is supplied by Rigby Taylor.
Clearspray
A tank cleaning product for use in pesticide sprayers, helping to clean and remove any residues. Its active ingredients include potassium hydroxide and sodium hypochlorite solution and is supplied by Rigby Taylor.
Clinch
A product name for an insecticide that contained the active ingredient chlorpyrifos for the control of frit fly and leatherjackets but is no longer approved for use.
Companion Gold
A product name for an adjuvant, with contains ammonium sulphate (16% w/w) and polyacrylamide (0.95% w/w), which has been designed for use with products containing glyphosate. It is supplied by Agrovista Amenity.
Copper Sulphate
A chemical compound which was used during the early and mid-20th Century as a pesticide to expel and partially kill earthworms.