Easy access matters most. A shallow, gently sloping edge lets amphibians move in and out of the water without difficulty, while steep, hard-edged ponds can be surprisingly difficult for them to use. Nearby damp, shady spots, a log pile or a compost heap close to the pond, give them somewhere to shelter and hibernate once they leave the water for the colder months.
Application is simple but does depend on getting the conditions right. Nematodes are typically mixed with water and applied with a watering can or hose-end feeder directly onto moist soil, since they need moisture to move through it and reach their target. Soil temperature also matters: most products need the soil to be above a minimum threshold, often around 5°C, to remain effective.
Bringing these elements together tends to work best gradually, adding one or two features at a time. A useful starting point is a browse through wildlife friendly garden products UK gardeners have found practical for exactly this kind of layout.
Whole peanuts should be avoided if fledglings are likely to be fed them directly, as they present a choking risk; a mesh feeder that breaks nuts into smaller pieces is the safer option. Hygiene is just as important as food choice: cleaning feeders regularly and moving their position from time to time helps reduce the build-up of bacteria that can spread between visiting birds.
Connectivity between gardens is often the missing piece. A small gap at the base of a fence, native hedging used in place of a solid boundary where practical, and less hard paving all help animals move between plots rather than being boxed into one. These small changes add up meaningfully over the course of a season.
Different nematode species target different problems. Some are used against slugs, gardenwildlife.com others against vine weevil grubs feeding on plant roots in containers and borders, and others against chafer grubs or leatherjackets damaging lawns. Because they are pest-specific, the right choice depends on identifying which pest is actually causing the damage.