Down to Earth Bat Guano 7-3-1 2lb.
tjs-hydroponics.shoplightspeed.com
This looks interesting, I could layer this in the bottom of a soil build so the taproot has to go find it.
Be careful with it, don’t inhale it, a lot of places are avoiding it now with the risks of inhaling it
Grok
Inhaling dust from bat guano used as a soil amendment poses a primary health risk due to the potential presence of Histoplasma capsulatum, a fungus that can cause histoplasmosis, a respiratory infection. The risk is generally low but increases in certain conditions, such as when handling large quantities of dried guano or in enclosed, damp spaces where fungal spores can become airborne. Below is a detailed breakdown of the risks, precautions, and context based on available information:
Risks of Inhaling Bat Guano
1. Histoplasmosis:
• Cause: Inhaling spores of Histoplasma capsulatum, which thrives in soil or material contaminated with bat or bird droppings, especially in damp environments like caves, attics, or basements.
• Symptoms: Can range from mild flu-like symptoms (fever, cough, fatigue, chills, headache, chest pain) to severe lung issues, particularly in immunocompromised individuals. Severe cases may lead to respiratory failure or disseminated histoplasmosis, which can be fatal.
• Risk Level: The risk of contracting histoplasmosis from gardening with bat guano is considered very low, especially with commercially processed products that are treated to reduce pathogens. However, the risk is higher when disturbing large accumulations of guano in enclosed spaces or when handling untreated guano. Bat experts note that transmission through guano in typical garden settings is rare.
• Vulnerable Populations: Immunocompromised individuals, such as those with HIV/AIDS, are at higher risk of severe illness. Occupations like gardeners, construction workers, or cave explorers may face increased exposure.
2. Other Pathogens and Allergens:
• Bat guano can harbor other pathogens or allergens, potentially causing respiratory issues or allergic reactions, though these are less well-documented.
• Pets are also susceptible to histoplasmosis or other infections from contact with contaminated soil or air.
3. Rare but Severe Cases:
• A 2024 report highlighted two fatal cases of histoplasmosis linked to bat guano used as fertilizer for marijuana cultivation. Both individuals were exposed to untreated guano, one through online-purchased fertilizer and another via attic accumulation. These cases underscore the potential danger in high-exposure scenarios, particularly for immunocompromised individuals.
Factors Increasing Risk
• Environment: The risk is higher in damp, enclosed spaces (e.g., attics, basements, caves) where guano accumulates and fosters fungal growth. Dry, well-ventilated areas pose less risk.
• Quantity and Handling: Disturbing large piles of guano increases the chance of aerosolizing spores. Small amounts of scattered guano, as typically used in gardening, pose minimal risk.
• Untreated Guano: Raw or unprocessed guano from caves or attics is more likely to contain active fungal spores compared to commercially treated guano, which is often sterilized to reduce pathogens.
Precautions to Minimize Risk
To safely use bat guano as a soil amendment:
• Wear Protective Gear: Always wear a dust mask or fine-particulate respirator to avoid inhaling spores, especially when handling dried guano or mixing it into soil. Gloves and safety glasses are also recommended to prevent skin contact and protect eyes.
• Dampen Guano: Lightly moisten guano before handling to reduce dust and spore dispersal.
• Use Commercially Processed Guano: Opt for guano from reputable suppliers that is sterilized or treated to eliminate pathogens. Check for certifications like OMRI (Organic Materials Review Institute) or NOP (National Organic Program) to ensure safety standards.
• Ventilate the Area: Work in well-ventilated spaces to minimize the concentration of airborne spores.
• Proper Application: Mix guano into soil or use as a liquid fertilizer (e.g., guano tea) to reduce dust. Avoid over-application; typical recommendations are 1-2 lbs per 100 square feet for soil mixing or 1-2 tbsp per gallon of water for liquid preparations.
• Hygiene: Wash hands thoroughly after handling guano, even with gloves, to avoid indirect exposure.
• Professional Cleanup for Large Accumulations: For significant guano buildup (e.g., in attics), hire professionals with specialized equipment, such as industrial vacuums with high-efficiency filters, to safely remove it.
Context and Benefits of Bat Guano
• Nutrient Value: Bat guano is a highly effective organic fertilizer rich in nitrogen (7-12%), phosphorus (3-5%), and potassium (1-1.5%), promoting vigorous plant growth, root development, and flowering. It also contains beneficial microbes and chitin, which help control soil pests like nematodes.
• Sustainability: When sourced responsibly, bat guano is a sustainable fertilizer, though unsustainable harvesting can harm bat populations and ecosystems.
• Commercial Safety: Most commercially available bat guano is processed to minimize health risks, making it generally safe for gardening when handled properly.
Conclusion
The risk of inhaling bat guano during gardening is low, particularly with commercially processed products and proper precautions. Histoplasmosis is the primary concern, but it is rare in typical garden settings and mostly associated with large, untreated accumulations in damp, enclosed environments. By wearing a mask, using gloves, dampening guano, and sourcing treated products from reputable suppliers, you can safely use bat guano as a fertilizer while minimizing health risks. For significant guano accumulations or concerns about bats in your home, consult professional wildlife control or pest management services.
If you have specific concerns about a particular product or situation, let me know, and I can provide further tailored advice!
I know the DTE guano is the OMRI rated type but I’d still be careful handling it especially of kids etc are around, I’ve always avoided it as much as I’d like to use it,