A microsporidian parasite of some grasshoppers, Nosema locustae, is sold as a bait formulation. It produces a fairly slow developing infection that weakens insects and usually kills them when they are molting. Adult insects are unlikely to be affected. The spores are perishable and should be used fairly soon after manufacture and/or stored with some refrigeration. M&R Durango produces the NoLo bait formulation; Semaspore is produced by Planet Natural.
Commercial Suppliers
| Company | State | Country |
| ARBICO Organics | AZ | USA |
| Buglogical Control Systems | AZ | USA |
| Great Lakes IPM, Inc. | MI | USA |
| Hydro-Gardens | CO | USA |
| Integrated Fertility Management | WA | USA |
| M&R Durango, Inc. Insectary | CO | USA |
| Natural Pest Controls | CA | USA |
| Peaceful Valley Farm Supply | CA | USA |
| Planet Natural | MT | USA |
| Rincon-Vitova Insectaries, Inc. | CA | USA |
