---
product_id: 78376364
title: "BioLogic's Scanmask Steinernema Feltiae (Sf) Beneficial Nematodes for Natural Insect Pest Control, 5 Million Size"
brand: "biologic"
price: "€ 66.30"
currency: EUR
in_stock: true
reviews_count: 4
category: "Biologic"
url: https://www.desertcart.sk/products/78376364-biologics-scanmask-steinernema-feltiae-sf-beneficial-nematodes-for-natural-insect
store_origin: SK
region: Slovakia
---

# Safe for plants & pets Kills 230+ pests US-made premium quality BioLogic's Scanmask Steinernema Feltiae (Sf) Beneficial Nematodes for Natural Insect Pest Control, 5 Million Size

**Brand:** biologic
**Price:** € 66.30
**Availability:** ✅ In Stock

## Summary

> 🌱 Unlock Nature’s Secret Weapon Against Pests — Because Your Plants Deserve the Best!

## Quick Answers

- **What is this?** BioLogic's Scanmask Steinernema Feltiae (Sf) Beneficial Nematodes for Natural Insect Pest Control, 5 Million Size by biologic
- **How much does it cost?** € 66.30 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/78376364-biologics-scanmask-steinernema-feltiae-sf-beneficial-nematodes-for-natural-insect)

## Best For

- biologic enthusiasts

## Why This Product

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

## Key Features

- • **Generous Coverage:** Treats up to 200 sq ft — perfect for indoor plants, raised beds, or small garden sanctuaries.
- • **Effortless Application:** Compatible with watering cans, pump sprayers, hose-end sprayers, or Nema-Jet for seamless integration into your routine.
- • **Eco-Friendly & Pet-Safe:** 100% natural nematodes that protect your plants without harming people, pets, or beneficial insects.
- • **Broad-Spectrum Pest Assassin:** Targets over 230 insect pests including fungus gnats, fleas, and grubs for total garden peace of mind.
- • **Farm-to-Table Quality Assurance:** Produced and shipped fresh in the USA with insulated packaging and ice to guarantee live nematodes on arrival.

## Overview

BioLogic's Scanmask Steinernema Feltiae (Sf) Beneficial Nematodes offer a natural, safe, and highly effective solution to control over 230 insect pests. Produced in the USA and shipped with care to maintain quality, this 5 million nematode pack treats up to 200 square feet and is easy to apply with common garden tools. Ideal for indoor plants and small garden beds, it ensures eco-friendly pest control without risking harm to pets or beneficial insects.

## Description

desertcart.com : BioLogic's Scanmask Steinernema Feltiae (Sf) Beneficial Nematodes for Natural Insect Pest Control, 5 Million Size : Pest Controlling Insects : Patio, Lawn & Garden

Review: They work! - Spendy, but if you have fungus gnats, you will find it well worth your money! There really could be better instructions. I always overthink things when there's not a clear explanation. I got these for my house plants so I had to convert the instructions from gardening, to make them applicable. In the end, after several emails back and forth with the company, who by the way are really great, this is what I had to do: This packet of 5 billion did all 35 of my houseplants-2 times. I estimated by dumping the packet onto a clean paper plate, separating half. I put half the powder in a 5 gal pale filled with 2 gallons of water and put the remaining powder back in the packet. I filled my little watering can from the mix in the bucket and watered my plants. I put the tiny bit of left over water from the bucket into a water jug that I could fit into the fridge. THAT HAD TO BE USED within one day. The next day I hit my most needy plants again with the left over water. [I think that a person could make a more diluted solution (ie: mixing ½ packet with 3 gallons of water rather than 2) so you don’t have to be so conservative and thorough while watering plants. That would also alleviate the step recommended by many to go back and water with plain water the next day to assist in even distribution. That’s just my thought. ] About 3 weeks later, I used the remaining contents of the package before the expiration date on the packet. *You will not be able to see any signs of life without a microscope! Just get them in the fridge when they arrive. Keep the packet closed and dry and put an extra zip lock over it while in the fridge. Mix with cold water. Apply at night because the directions say to, but I don't think it's that important for inside plants unless it's midday and they're getting enough sun to kill the nematodes before they get safely down in the soil-so use when the sun goes down. Store the mixed solution in the fridge, use it up within 24 hours, and trust! You see nothing happen. It's when you realize that fewer and eventually no gnats are flying around, that they worked. I am reordering to get the others that were in a stage that I missed. I think this will take care of my problem for good. I have been using mosquito bits since the nematode application and they help, but some gnats are slowly reappearing. You need both, and probably a few cycles-two for sure, to erradicate the problem. Mine was BAD. I tried all of the home remedies and wasted so much time. Just get these and some mosquito bits and get rid of the problem once and for all. Order them ASAP when you see a gnat reappear! Expect to maybe do preventative maintenance at least once per year even if you don't see any gnats When you mix, you will see the DE floating around and remaining clumping looking. It's only in with the nematodes as a de-caking agent. It is nothing to worry about. With the vague instructions and in overthinking all of this, I did a lot of research. Some DE, and lots of mosquito bits will not hurt the nematodes but fertilizer, and of course-pesticide is said to be harmful to them. Therefore, you kind of need to plan things out. I used insect frass as a fertilizer, and neem oil about a week before my nematode application, and I didn't have to worry about that hurting the little fellas.
Review: Works fine - Seems to be working fine. Almost all gnets are gone.

## Features

- NATURAL PEST CONTROL: Kills over 230 different pests. Safe for people, pets, plants and beneficials!
- TOP QUALITY NEMATODES PRODUCED IN THE U.S.A: Shipped in an insulated box with ice to ensure quality
- KILL FLEAS, FUNGUS GNATS, GRUBS AND MORE: Contains Sf nematodes which kill a wide range of pests
- EASY TO APPLY: Apply with watering can, pump sprayer, hose end sprayer, or Nema-Jet Sprayer
- TREATS 200 SQUARE FEET: Enough for all your indoor plants or a couple raised beds

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00BWRNE3A |
| Best Sellers Rank | #14,963 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #20 in Beneficial Pest Control Insects |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,116) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Item model number | 005M-S.f.-S-1 |
| Manufacturer | BioLogic Company |

## Product Details

- **Brand:** Biologic
- **Item Form:** Spray
- **Item Weight:** 0.01 Ounces
- **Target Species:** Insects
- **UPC:** 850175200053

## Images

![BioLogic's Scanmask Steinernema Feltiae (Sf) Beneficial Nematodes for Natural Insect Pest Control, 5 Million Size - Image 1](https://m.media-amazon.com/images/I/61phxDlxNuL.jpg)

## Questions & Answers

**Q: Will it be helpful to treat a termite infestation in dirt basement floor ?**
A: The Ecomask product is better for termites, but you should always have a professional come and look at it.  As the colony might not located where you see the termites.

**Q: How do you use this in a hydroponic system?**
A: I have no idea how I'm suppose to apply these.  Do I mix the nematodes into a sprayer with water.  How small are they?  What is in the small packet that comes with the nemotodes?

**Q: Will this work against Asiatic Garden Beetle grubs?**
A: Our Heteromask product would be a better option, but the Asiatic Garden Beetle is a difficult grub to control even with chemicals.

**Q: Do these target clover mites at all?**
A: No, nematodes are not recommended for any type of mite.

## Customer Reviews

### ⭐⭐⭐⭐⭐ They work!
*by S***E on April 13, 2020*

Spendy, but if you have fungus gnats, you will find it well worth your money! There really could be better instructions. I always overthink things when there's not a clear explanation. I got these for my house plants so I had to convert the instructions from gardening, to make them applicable. In the end, after several emails back and forth with the company, who by the way are really great, this is what I had to do: This packet of 5 billion did all 35 of my houseplants-2 times. I estimated by dumping the packet onto a clean paper plate, separating half. I put half the powder in a 5 gal pale filled with 2 gallons of water and put the remaining powder back in the packet. I filled my little watering can from the mix in the bucket and watered my plants. I put the tiny bit of left over water from the bucket into a water jug that I could fit into the fridge. THAT HAD TO BE USED within one day. The next day I hit my most needy plants again with the left over water. [I think that a person could make a more diluted solution (ie: mixing ½ packet with 3 gallons of water rather than 2) so you don’t have to be so conservative and thorough while watering plants. That would also alleviate the step recommended by many to go back and water with plain water the next day to assist in even distribution. That’s just my thought. ] About 3 weeks later, I used the remaining contents of the package before the expiration date on the packet. *You will not be able to see any signs of life without a microscope! Just get them in the fridge when they arrive. Keep the packet closed and dry and put an extra zip lock over it while in the fridge. Mix with cold water. Apply at night because the directions say to, but I don't think it's that important for inside plants unless it's midday and they're getting enough sun to kill the nematodes before they get safely down in the soil-so use when the sun goes down. Store the mixed solution in the fridge, use it up within 24 hours, and trust! You see nothing happen. It's when you realize that fewer and eventually no gnats are flying around, that they worked. I am reordering to get the others that were in a stage that I missed. I think this will take care of my problem for good. I have been using mosquito bits since the nematode application and they help, but some gnats are slowly reappearing. You need both, and probably a few cycles-two for sure, to erradicate the problem. Mine was BAD. I tried all of the home remedies and wasted so much time. Just get these and some mosquito bits and get rid of the problem once and for all. Order them ASAP when you see a gnat reappear! Expect to maybe do preventative maintenance at least once per year even if you don't see any gnats When you mix, you will see the DE floating around and remaining clumping looking. It's only in with the nematodes as a de-caking agent. It is nothing to worry about. With the vague instructions and in overthinking all of this, I did a lot of research. Some DE, and lots of mosquito bits will not hurt the nematodes but fertilizer, and of course-pesticide is said to be harmful to them. Therefore, you kind of need to plan things out. I used insect frass as a fertilizer, and neem oil about a week before my nematode application, and I didn't have to worry about that hurting the little fellas.

### ⭐⭐⭐⭐⭐ Works fine
*by R***E on November 27, 2025*

Seems to be working fine. Almost all gnets are gone.

### ⭐⭐⭐⭐⭐ TIPS FOR USING BENEFICIAL NEMATODES TO CONTROL FUNGUS GNATS IN INDOOR PLANTS
*by J***A on October 6, 2022*

I appreciated the review/tips by SHEILA R TWITE, but felt like I needed more information... so I'm sharing with you what I did that yielded fantastic results. Fungus Gnats are annoying, but also harmful to plants. I so appreciate this product and will use again if needed in the future! TIPS FOR USING BENEFICIAL NEMATODES TO CONTROL FUNGUS GNATS IN INDOOR PLANTS 1. Keep the Beneficial Nematodes (BN) in original packaging and place inside a mailing envelope or manilla envelope to minimize light exposure. YOU MUST STORE IN REFRIGERATOR. Avoid direct sunlight or warm places as this could kill the BN. 2. Always treat plants in the evening after dark. Again, this is to minimize the possibility that sunlight/heat could kill BNs before they get a chance to burrow into the plant soil. 3. Packaging states that it contains 5 million BNs and that 1 packed teaspoon = 5 million BNs. I found that my package had more than 1 teaspoon in the package. The packaging provides tips for mixing up the entire package, but you do not need to use the entire package at once. In fact, depending on the number of plants you need to treat, you can likely get multiple treatments out of one package, with treatments spread over a period of several weeks. By doing so, this helps to ensure that you are catching all the fungus gnats in your home since treatment only targets the larval stage. I also recommend that you use yellow sticky traps (Amazon) to help catch/kill adult gnats to limit additional eggs from being laid in the soil during your treatment period. 4. Start by mixing 1/4 teaspoon of BN (packed) with one gallon of cold water. Mix well and wait 15 minutes before using. While waiting those 15 minutes, water your plants with plain water (before treating with BN solution). You do not have to fully saturate plants – but just get the top of plant soil wet in preparation for the BN solution. 5. When BN solution is ready, transfer to a watering can and then treat your plant’s soil. Goal is to split this gallon among all your plants. Bigger pots will need more solution. {I have 20 plants and I chose to mix up 2 gallons (1/2 tsp of BN) to treat all my plants.} You will be watering again with plain water in the next step. 6. After using BN solution, water your plants again with plain water. This sort of “waters in” your BN solution, but also ensures your plants are adequately watered- it is up to you how much water your plants can tolerate. The BN directions also mention rinsing off BN solution from foliage. I don’t believe the solution is harmful to the foliage, so this step is really to make sure that all the BNs make it into the soil and are not wasted (and may apply more to outdoor applications?). I pretty much treated the soil (not foliage), so I didn't worry about rinsing off the foliage. 7. Note the “use by” date and make a plan for using the entire package over the period of several weeks. See #3 regarding spreading out treatments. 8. I found that the vast majority of my fungus gnats disappeared after the first treatment, but it is important to note that a surviving (or new adult) fungus gnat can continue to lay eggs thus continuing the life cycle. This is why I recommend multiple treatments over several weeks and using yellow sticky traps to capture the adults before they can lay more eggs. Directionsm from BioLogic website: https://biologicco.wpengine.com/wpcontent/uploads/2016/06/Sprayable-Directions.pdf

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-04*