Nemasys leatherjacket killer (100sqm pack)

Our house is built on a site that has red sandstone not far below the surface. In fact digging the founds was quite problematic and required heavy machinery. As a result, we do not have much depth of soil and in some areas of our front lawn, it’s only a few inches. This has the dual effect of making these areas vulnerable to hot dry spells and, for whatever reason, attractive to crane flies to lay their eggs. Their larvae then eat the grass roots. In the past this has resulted in large bare patches. I tried Nemasys last year 2022 and saw an immediate improvement with our lawn looking better than it has for years. Then we had the early summer of 2023 which resulted in my grass being burnt and dying back. I applied Nemasys again a few weeks ago and have seen major improvements since with a green recovery which suggests that part of my problem continued to be leatherjacket infestation rather than just being burnt! The product requires taking a little care to mix it in the correct proportions and then use a watering can with a coarse rose. It also has a short shelf life so buy it when you intend to use it, otherwise being a biological product, it will die on the shelf!. It goes quite a long way. My front lawn is around 40/50sq metres and rear about 80/90sq metres and one pack of Nemasys easily dealt with the front lawn and left me with enough to apply it to troublesome patches on the rear lawn. I am not green fingered by any means but find this product has worked very well for me and can recommend it.

Well I've used these and there are still signs of the little critters ..so not sure if you have to reapply every year. Initially it cured the problem. Easy to apply. Recommended.

We’ve bought this product several times now, it’s been as effective as possible in helping to control the leather jackets in our lawn. Easy to apply with simple instructions. Make sure you keep refrigerated if you don’t use immediately.

not sure we felt this was effective in our garden, it did reduce the level of creatures dominating the grass but did not eliminate it.

Done the trick I was invaded the first year and the spiders grown enormous but year 2 and all gone

This was perfect to eradicate our leather jackets. Our grass had turned to mud and we could even hear the noises of them feeding! After reading the reviews of the Nematodes we decided to give it a go. We stored them in the fridge as it stated in the instructions until we were ready to use them. The instructions are clear and concise on when and how to use the Nematodes but please make sure you read them to apply the correct dosage. Within a couple of weeks we noticed a difference in the grass. Usually, during a wet period we could see the leather jackets all over our patio. After the 2 weeks there was no sign of them any more and a marked improvement in the lawn. Our lawn is now back to its old condition again and we will certainly use this product again if we discover the same problem.

I had a 'worst case' type situation with leatherjackets in my new-build back garden. The grass was *entirely* eaten away by the time I learned it was probably an infestation of some kind; when I scraped the remaining moss with a hand rake, not only did it come up easily, it revealed a veritable hoard of leatherjackets. The ground was filthy with them i.e. approx. 10 grubs revealed with every foot-and-a-half of soil raked, and the soil had a rotten stench. I raked off the last remnants of moss and then treated the soil as directed. It was tempting to just use guess work on the amount of powder to water because the instructions are quite exacting but given that I had a bad infestation I decided to stick to the letter of the instructions and applied it exactly. I watered the soil every day religiously as directed for the next four weeks (boy was I glad to get it over with) and then waited. In the meantime I sprinkled a little grass seed down and this sprang up quickly but I decided to pull it all up just to be as sure as I could that the leatherjackets were all gone before I attempted growing a new lawn because if they weren't all destroyed, the remainder would just attack the new grass and they'd be especially hungry too. So I waited a couple of months longer. I bought another packet of Nemasys ready for Aug. and am now preparing the ground to use this. Although it's not actually necessary, I want to turn the soil over to remove stones to give the new lawn the best chance to grow given that the grass I had was turf and the soil that came with that looks to have been eradicated. In turning over the soil, I have found hardly any leatherjackets. I would estimate that 98% have been killed, unearthing just three or four in several feet of digging. In short, the product works but, as it states, it can take several months to fix the problem (and you will want to be sure because leatherjackets that turn into craneflies return to the same breeding ground to lay *their* eggs).

Great product