Frequently Asked Questions

1What is the benefit of feeding my pet black soldier fly larvae versus other worms or insects?
Rich in protein, calcium and phosphorus, BSF larvae are a high-value feed source. See below for nutritional chart.

2How many worms should I feed at a time?
This will vary depending on the age and type of pet you have. Please consult with a breeder or retailer to find out the appropriate amount for your pet.
3Why are there different sized worms in my cup?
Because some worms grow faster than others you might notice a difference in the size of the worms. And to ensure you receive the amount you ordered, we include 10%-20% more worms in each cup to cover the variance in case you feel you may have received less than what you expected.
4Should I leave the top off of the cup to give the worms some air to breathe?
No. The worms are placed in a special cup that has air holes for them to breathe so you don’t have to worry about transferring them to a different container for storing. If you feel the bedding is too dry due to low humidity, just add a few drops of water.
5Should I refrigerate the worms?
No. The worms should be stored in a cool place, usually between 50 to 60 degrees Fahrenheit. Although you can keep worms for a month when stored at 50 degrees, we highly recommend you order the number of worms your pet will eat within 2 weeks to ensure they eat fresh food.
6If some of my worms are turning dark does that mean they are dying?
Not at all. The larger and darker worms are simply maturing and reaching their next cycle before they undergo a complete metamorphosis. It is best to feed your pet these darker worms first. Or if you separate them from the rest of the white worms, you may end up with black soldier flies within 2 weeks, which is also safe for your pet to eat.
7Can I return the worms?
Unfortunately no because we only ship fresh worms. If you have any issues please contact us and we will do our best to accommodate your needs.
8What is our Privacy Policy?
This privacy policy sets out how Vivotein uses and protects any information that you give Vivotein when you use this website. We are committed to ensuring that your privacy is protected. Should we ask you to provide certain information by which you can be identified when using this website, then you can be assured that it will only be used in accordance with this privacy statement. Vivotein may change this policy from time to time by updating this page. You should check this page from time to time to ensure that you are happy with any changes. We are committed to ensuring that your information is secure. In order to prevent unauthorized access or disclosure, we have put in place suitable physical, electronic and managerial procedures to safeguard and secure the information we collect online. We will not sell, distribute or lease your personal information to third parties unless we have your permission or are required by law to do so. We may use your personal information to send you promotional information about third parties which we think you may find interesting if you tell us that you wish this to happen. You may request details of personal information which we hold about you under the Data Protection Act 1998. A small fee will be payable. If you would like a copy of the information held on you please write to: If you believe that any information we are holding on you is incorrect or incomplete, please write to or email us as soon as possible, at the above address. We will promptly correct any information found to be incorrect.
9What information does Vivotein collect?
We may collect the following information: name, contact information including email address, demographic information such as postcode, preferences and interest, other information relevant to customer surveys and/or offers
10What do we do with the information we gather?
We require this information to understand your needs and provide you with a better service, and in particular for the following reasons: Internal record keeping. We may use the information to improve our products and services. We may periodically send promotional emails about new products, special offers or other information which we think you may find interesting using the email address which you have provided. From time to time, we may also use your information to contact you for market research purposes. We may contact you by email, phone, fax or mail. We may use the information to customize the website according to your interests.