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.

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Nemasys leatherjacket killer (100sqm pack)

Nemasys leatherjacket killer (100sqm pack)

Product ID: 49523584

Details

Brand
Nemasys
Item form
Powder
Specification met
USDA
Target species
Nematodes
Unit count
1 count

🌱Natural nematodes for eco-friendly pest control

💧Easy water-based application with watering can or hose

❄️Perishable, keep refrigerated up to 2 weeks

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Description

🌿 Defend your turf naturally—because your lawn deserves the best!

SEASONAL PRECISION - Optimal treatment window in Autumn ensures maximum nematode effectiveness when leatherjackets are most vulnerable.
EFFORTLESS APPLICATION - Simply mix with water and apply using a watering can or EasyNem Applicator for precise, mess-free treatment.
SAFE FOR FAMILY PETS - Totally safe for children, pets, and wildlife—use your lawn immediately after application with zero downtime.
ECO FRIENDLY LAWN SAVIOR - Harness millions of natural nematodes to naturally eliminate leatherjackets without harmful chemicals.
DUAL STRENGTH FLEXIBILITY - Treat 100 sqm at standard strength or 50 sqm at double strength for tougher infestations, adapting to your lawn’s needs.

Nemasys Leatherjacket Killer is a USDA-approved, natural nematode-based biological control product designed to target and eliminate leatherjacket larvae in lawns. Easy to apply with water, it’s safe for children, pets, and wildlife, and works best in Autumn when soil temperatures exceed 10°C. Each pack treats up to 100 sqm at standard strength or 50 sqm at double strength, with a refrigerated shelf life of two weeks. Ideal for professional-grade lawn care that’s eco-conscious and highly effective.

Specifications

ASIN	B000VPCUPW
Best Sellers Rank	568 in Garden ( See Top 100 in Garden ) 21 in Indoor Multi-Insect Control 40 in Outdoor Insect Control
Brand Name	Nemasys
Customer Reviews	4.2 4.2 out of 5 stars (4,924)
Item Form	Powder
Manufacturer	Becker Underwood
Specification Met	USDA
Target Species	Nematodes
Unit Count	1 count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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E£ 4701

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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