Not all suppliers package the same quantities. A unit from one company may not be equal to a unit from another company which may not be equal to a colony from us. Some companies do not state any quantity other than saying that they ship a unit of measure. We guarantee a minimum of 10,000 pupae per colony. In fact, we ship by volume and ship an average of as much as 150% more than what we guarantee. What does this mean? When you buy from us you receive a specified quantity which is intended to minimize the possibility of having the inconvenience of an increase in the fly population through the year.

Some suppliers state there is no warranty expressed or implied. We ship when we say we will and certify you will have a live hatch- GUARANTEED.

Some suppliers sell so many other products that fly parasites are just another item in their catalog. We sell only fly parasites. We are a family owned and operated company, large enough to do the job right but small enough to value each and every customer. We’ve been in business for over 25 years; when you call us, you will talk to a representative with an average of 14 years in this business.

Often times, the cheap one is not the best value. If you are looking for the best value for your expenditure, look beyond just the price.

The Source is a family owned and operated company.