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How long is grub liquid effective against lawn army worm.

I have used baythroid 3 times this summer and still have infestation

Lawns • Pests

Hi Ingrid, 

Thank you for contacting Yates.

The product is not a systemic or pre-emergent chemical, so it will require direct contact with lawn armyworm to eradicate the infestation and will stay active in 5-7 days. 

For successful control, we recommend applying 

- mow the lawn low before application;
- in late afternoon early evening when the worms are most active and stay on the soil surface;
- lightly water before and after application; 

- ensure to mix enough quantity in an accurate ratio. 

Hope this helps and happy gardening :)



Answered: 25 May, 2021

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