I have just discovered that leatherjackets are responsible for my poor lawn. Will this work in April?

Nematodes will control leatherjackets provided the conditions are right. The soil needs to be warm and wet and the leatherjackets need to be at the right stage of their life cycle. The best time of the year to treat is when the young are first emerging in the autumn. However the nematodes can also be used in the spring once the soil has warmed up. A good rule of thumb is to treat as soon as you have grass growing, but don't leave it so late that the leatherjackets have started to pupate ready to fly off and breed. April can be just about right.

My lawn has a mix of eggs, flies and leatherjackets. Will product work if applied now(start of August)?

September/October is better, and this does the job well. Don't order to early as it only has a fridge life of about 3 weeks. there is another similar product for other infestations, I used both.

April and sept best. Apply after lots of daddy long legs flying about. Best above 12*c

How long does it take for the treatment to work?

No difinitive answer, as they have to hatch and deal with the leather jackets. Best to apply in September after the crane fly have emerged to lay their eggs. Repeat in the spring when warm enough. Our lawn is beautiful now after above treatment.

Nemasys Leatherjacket Killer 100sqm Pack

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€ 52.73

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Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Outsmart lawn pests naturally—because your turf deserves the best!

SAFE FOR FAMILY PETS - 100% natural and non-toxic formula keeps your lawn pest-free without harming children, pets, or wildlife.
GENEROUS 100 SQM COVERAGE - Treat large lawn areas in one go—perfect for autumn application or double strength spring treatment.
NATURAL PEST CONTROL POWER - Harness millions of Steinernema feltiae nematodes to target leatherjackets safely and effectively.
EASY APPLICATION MAXIMUM IMPACT - Simply mix with water and apply with a watering can or EasyNem Applicator—no complicated steps required.
SEASONAL PRECISION FOR BEST RESULTS - Apply in autumn when soil temps exceed 10°C for optimal nematode activity and guaranteed leatherjacket control.

Nemasys Leatherjacket Killer is a natural, nematode-based biological treatment designed to control leatherjacket larvae in lawns. Each 100sqm pack contains millions of Steinernema feltiae nematodes that actively seek and destroy leatherjackets, the larvae of crane flies. Safe for children, pets, and wildlife, it is best applied in autumn when soil temperatures are above 10°C, with easy water-based application methods. The product requires refrigeration and has a two-week shelf life, ensuring freshness and effectiveness. Ideal for professional-grade lawn care, it prevents root damage and lawn deterioration caused by these pests.

Specifications

ASIN	B000VPCUPW
Best Sellers Rank	4,298 in Garden ( See Top 100 in Garden ) 94 in Indoor Multi-Insect Control 248 in Outdoor Insect Control
Brand Name	Nemasys
Country of Origin	United Kingdom
Customer Reviews	4.2 4.2 out of 5 stars (4,926)
Item Form	Powder
Manufacturer	Becker Underwood
Specification Met	USDA
Target Species	Nematodes
Unit Count	1 count

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