Professional products
We offer professional-grade repellents for agricultural, forestry, and industrial settings.
For amateur use, please see our Amateur Products range

A rain-fast, scent-based deer repellent.

A versatile animal and bird repellent.


Proven Protection Against Deer Damage
Young trees are especially vulnerable to deer browsing, while established trees face damage from fraying and debarking, threats that can reduce long-term yield.
TRICO® forms a protective barrier that deters deer and helps maintain plant health. It provides reliable, long-lasting protection for deciduous and coniferous trees, right through to the start of spring growth.
Laronkarn is proud to be the exclusive UK importer of TRICO® – trusted by forestry professionals for proven, rain-fast deer protection.
Key Features
- Active ingredient: Sheep fat, 64.6 g/L.
- Mode of action / use: Scent and taste repellent for protecting forestry trees against deer browsing, rubbing and debarking damage.
- Target species: Fallow, roe, red, and sika deer.
- UK authorisation: Forestry use on deciduous and coniferous trees.
- Formulation: Ready-to-use oil-in-water emulsion.
- Application: Once per year, undiluted, at 20L/ha. Approx. 5-10ml per leading shot.
- Rain-fast: Weather-resistant once dry.
- Protection period: Up to 6 months, depending on site conditions and browsing pressure.
- Pack size: 10L container.
- Storage: Store in original packaging between 0°C and 30°C.
- Ecological information: Approved for use in certified forests when applied according to the UK approved label.
Key Features
- Method: Apply using knapsack, tunnel, or field sprayers.
- Rate: 10-20L/ha applied as a neat spray at a rate of 5-10ml per lead shot.
- Number of applications: 1 per annum (max. 20L/ha per annum).
- Timing: Autumn or early winter before commencement of damage.
- Conditions: Dry conditions (low solar radiation)
- Buffer zone: Maintain at least a 1m buffer from water bodies.
- Compatibility: TRICO® should not be tank mixed with any other products. Other products should not be used 1 week before/after TRICO® application.
For Safety Data Sheet (SDS), product label or anything else, such as pricing, application advice, or delivery query, get in touch via our contact page.
When and Where To Apply
TRICO® application timing, targets, and nozzle type based on the risk profile.
| Application Timing | Target | Application Rate | Nozzle Type | ||
|---|---|---|---|---|---|
| Browsing | Winter | Autumn / early winter | Lead shoot | 5–10 mL/lead shoot | Fine cone |
| Spring / Summer | Spring / early summer | Lead shoot | 5–10 mL/lead shoot | Fine cone | |
| Fraying | Mid / Late summer | Whole tree | 5–10 mL/lead shoot | Flat fan | |
| Debarking | Late autumn / early spring | 1–1.5 m above ground | 100 mL/trunk | Fine cone |
Key Features
- Keep in original container, tightly closed.
- Store between 0°C and 30°C; protect from frost.
- Do not return left over product to container.
- Store for up to 24 months from manufacture.
- Use opened containers as soon as possible.


Proven Control Across Animal and Bird Species
CURB® is used across agriculture, horticulture, and forestry to deter both mammals and birds. The liquid formulation, liquid CURB® Crop Spray (MAPP 18643), disrupt animals’ sense of smell and taste, making treated areas unappealing to browse or disturb.
CURB® works by irritating the chemo-receptors in the nose and mouth, structures that are shared by both mammals and birds, making it broadly effective across species.
Please note: Due to the large number of uses and variety of settings for CURB® animal repellent please contact us for guidance.
For Safety Data Sheet (SDS), product label or anything else, such as pricing, application advice, or delivery query, get in touch via our contact page.