CastClear should be applied at the first sign of lawn worm casts on the surface of the lawn, usually towards the end of August each year.  The actual timing of applications may change to coincide with a wetter summer or spring.  Worm populations and worm activity may vary according to the presence of ground frost.

Months to apply CastClear

Jan	Feb	Mar	Apr
May	Jun	Jul	Aug
Sep	Oct	Nov	Dec