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Apply to moist lawns during August and early September. This is when the young grub larvae are active and the temperature is above 12ºC (54ºF).

Immediately after applying the nematodes, water the grass well so the nematodes are washed into the soil to reach the roots where the chafer grubs will be. Make sure the lawn does not dry out after applying nematodes. Keep the lawn well watered for at least two weeks.

Do not apply later than September, since the grubs start to move down deeper in the soil and become inactive until the following spring.

The nematodes (Heterorhabditis megidis) seek out the chafer grubs and attack the pest by entering natural body openings. Once inside, they release bacteria that stops the pest from feeding, quickly killing the pest. They do not stop there. The nematodes reproduce inside the dead pest and release a new generation of hungry infective nematodes, which disperse and search for further prey.

For more information please visit http://www.nemaslug.com