About this product
Fungus gnats have two stages and treating only one of them is why people end up going round in circles. The adults you can see are laying eggs. The larvae you cannot see are eating roots in the compost. Kill the larvae and the adults already flying carry on laying. Trap the adults and the larvae carry on chewing. This bundle covers both at once, which is the only approach that actually finishes the job.
Inside: a 60 square metre pack of Steinernema feltiae and carpocapsae nematodes for the larvae, and five eco yellow sticky traps, each 12cm by 5cm, for the adults. First Class shipping is included, which is not a gesture. Nematodes are live and perishable, and getting them to you quickly is the difference between a treatment that works and one that does not.
The nematodes go in as a compost drench. They find the larvae in the top few centimetres of compost, enter them, and kill them within hours. Over the next two to three weeks the adult population collapses because nothing new is emerging. Meanwhile the sticky traps take out the adults already in the room before they can lay another generation.
It suits houseplants, seed trays, cuttings, propagators, greenhouses and conservatories. Safe for bees, ladybirds, pets, children and edibles, with no withdrawal period.
One honest note. If you have only a handful of gnats, this is more than you need. Nematodes work best where there is a real larval population to feed on, and a light infestation is often better handled by traps alone plus letting the compost surface dry out between waterings. Buy the bundle when the problem is established rather than at the first fly.
Live product, despatched fresh rather than held in stock, and it cannot be returned. Apply the nematodes within a few days of arrival and keep them in the fridge until you do.