Frequently Asked Questions

EM-1® Expiration: EM-1 generally has a shelf life of 1 year.  If stored properly and kept airtight, EM can last long after the expiration date and will not harm plants or drains if disposed of after the date. Test the smell and pH of the EM-1® to know if it is still viable. It should have a sweet, fermented smell and a pH of 3.5 or below.

If you simply mix it with water, we recommend using it within 12-24 hours. If you activate EM, we recommend using it within 30 days.

Most synthetic weed killers will kill the microbes. If pesticides are to be used, please wait at least 48 hours between applications of pesticide and EM-1®. As long as you reapply the EM-1® weekly, you will replenish the good microorganisms, thereby enhancing the soil’s ecosystem. You will notice, after consistent use of EM-1®, that you will be able to reduce the use of weed killers, pesticides, and other chemicals.

The white flakes are the beneficial yeast, Saccharomyces cerevisiae, and are perfectly normal.

IPRO EM-1® is the most suitable product because it has been approved for human consumption. EM-1® is not harmful to humans; however, we cannot endorse its consumption because it has not been approved for that use. Activated EM products are not supported for human consumption. 

Yes, you can find our certificates on the OMRI website here: www.omri.org