Identity & quality
Verified ant identification, fungal species and strain, batch, viable material, and storage history.
Aloha Organic · Little fire ant field guide
Fungi, ants, and the evidence.
A focused reading guide to Metarhizium, biological control, and the distinction between promising results and demonstrated field performance.
← All field guides · Coconut & CRB guide
Metarhizium · a serious research questionLiving fungi.
Living fungi.
Specific evidence.
Entomopathogenic fungi can infect susceptible insects through their outer covering. Metarhizium is an important subject in ant-control research. The practical question is which strain, delivered how, against which ant, and with what colony-level result.
Read the evidence in order
- OrganismCorrect ant and fungal identification
- LaboratoryMeasured outcomes under controlled exposure
- ColonyQueens, brood, and continued reproduction
- FieldPersistence, coverage, and reinvasion
- ProductExact formulation, viable strain, and authorized use
What the accessible synthesis supports
A 2023 systematic review found promising mortality results for Beauveria bassiana and Metarhizium anisopliae, predominantly in experiments on other pest-ant groups. It also emphasized the difficulty of extrapolating results and the need for better field trials.
Read the review inside Aloha OrganicThe LFA-specific
paper trail.
A university catalog records a study by A. Castiñeiras and M. Neyra evaluating Beauveria, Metarhizium, and Bacillus against Wasmannia auropunctata. This is directly relevant to the question. We have located the bibliographic record, but have not verified the original methods or results; no mortality percentage or treatment recommendation is inferred from its title.
View the original catalog record
Universidad Nacional Agraria / SIIDCA-CSUCA · Evaluación de cepas… contra Wasmannia auropunctata
What a strong
field trial would record.
A fair comparison
Comparable untreated controls, baseline surveys, repeat sites, and a written method established before measuring results.
Useful outcomes
Track worker activity, colony persistence, duration of any reduction, non-target observations, and repeat detections.
These are questions for evaluating research, not instructions to culture or release a microorganism.
Research and product claims
A paper about a fungal species does not by itself validate every formulation containing that name. Attack’s current product description identifies it as a soil/plant-health material, not a registered pesticide. This guide therefore makes no claim that Attack controls LFA.
Sources & reading notes
Reviewed October 23, 2026. Guidance is written by Aloha Organic; sources retain their original authorship.