---
product_id: 688877869
title: "Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz (Pack of 2)"
brand: "sierra natural science"
price: "€ 41.92"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/688877869-sierra-natural-science-203-concentrate-pouch-1-25-fl-oz
store_origin: SK
region: Slovakia
---

# 100% pure rosemary & clove botanical extracts Concentrated 1.25 fl oz makes 32 fl oz EPA Exempt FIFRA 25(b) safe formula Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz (Pack of 2)

**Brand:** sierra natural science
**Price:** € 41.92
**Availability:** ✅ In Stock

## Summary

> 🌱 Protect your plants like a pro—naturally and effortlessly!

## Quick Answers

- **What is this?** Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz (Pack of 2) by sierra natural science
- **How much does it cost?** € 41.92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/688877869-sierra-natural-science-203-concentrate-pouch-1-25-fl-oz)

## Best For

- sierra natural science enthusiasts

## Why This Product

- Trusted sierra natural science brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Kid & Pet Safe:** EPA exempt and non-toxic when used as directed, perfect for family-friendly gardens
- • **Zero Wait Time:** Use up to harvest with 0-Day REI for uninterrupted plant care
- • **Powerful Pest Defense:** Dehydrates & kills root and stalk-feeding insects for healthier plants
- • **Fungus & Algae Fighter:** Targets fungus and algae to cut off pest food sources and boost growth
- • **Ultra-Concentrated Formula:** Small 1.25 fl oz pouch expands to 32 fl oz, maximizing value and reducing waste

## Overview

Sierra Natural Science 203 Concentrate is a potent, 100% botanical pest and fungus control solution made from pure rosemary and clove extracts. This EPA-exempt, food-grade formula dehydrates pests and attacks fungus and algae, promoting vigorous plant growth without harmful chemicals. Its ultra-concentrated 1.25 fl oz pouch makes up to 32 fl oz of treatment, safe for use up to harvest and around children and pets.

## Description

High moisture levels in soils and around pots encourage the development of fungus gnats, shore flies and other pests. When this occurs, plants will be stunted with reduced growth and leaf drop. 203 has active ingredients that cause pests to dehydrate and die while also, attacking fungus and algae, reducing the food source for pests. 203 is made up of 100% pure rosemary & clove botanical extracts highly water soluble. We process raw certified organic botanicals and herbs in-house, ensuring oils and terpenes have a consistent potency across all of our products. The botanical extracts are all food grade GRAS (generally recognized as safe when used as directed) materials, that are fully biodegradable, and not toxic to animals. It is exempt from EPA registration under minimum risk pesticide exempted under FIFRA section 25(b). It can be used on a wide variety of plants, fruits, and vegetables.

## Features

- Dehydrates & kills pests and attacks fungus & algae
- Fights against insects that feed on your plants roots & stalks
- Can be used up to harvest (0-Day REI)
- EPA Exempt Fifra 25 (b)
- Safe around children & pets when used as directed

## Product Details

- **Item Form:** Oil
- **Item Weight:** 2.5 Ounces
- **Liquid Volume:** 2.5 Fluid Ounces
- **Active Ingredients:** Clove Oil, Rosemary
- **Brand:** Sierra Natural Science

## Images

![Sierra Natural Science - 203 - Concentrate Pouch - 1.25 fl oz (37 mL) makes up to 32 fl oz (Pack of 2) - Image 1](https://m.media-amazon.com/images/I/61qxhdgq2TL.jpg)

## Available Options

This product comes in different **Size, Number Of Items** options.

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**Shop now:** [https://www.desertcart.sk/products/688877869-sierra-natural-science-203-concentrate-pouch-1-25-fl-oz](https://www.desertcart.sk/products/688877869-sierra-natural-science-203-concentrate-pouch-1-25-fl-oz)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-10*