Frequently Asked Questions

What is 600, who started it, and why?

600 and 600 Million are nicknames for 600 Million Stray Dogs Need You,
an IRS registered non-profit organization.

600 was started by Alex Pacheco, who also co-founded PETA where he also
served as the Chairman for 20 years before leaving.

600 was founded to end the inhumane killing of millions of strays around the world,
beginning with about sixty countries where there are no laws against cruelty to animals,
and where strays are killed by methods such as:



Beating them to death


Lacing rotten meat with broken glass


… and the list goes on. Photos and videos of dogs being killed in these ways, are available.

Where can I get these formulas or products, and what can you tell me about them?

  • The ones we are working on, are not available yet due largely to a lack of funding.
  • We receive no funds from the government nor from drug companies.
  • More than one formula is being worked on.
  • There are more than 100 birth control drugs and formulas, already known to exist.
  • Of the finished formulas available, none can effectively solve the global overpopulation problem.
  • We are working on the first of several formulas to reduce animal and human suffering.

How will the formulas be administered?

  • Each country will be different, as each country has their own regulations.
  • In the U.S. the FDA and the EPA will likely decide how these formulas will be administered.
  • In the U.S. a prescription from a veterinarian will likely be needed.
  • In impoverished countries (where the suffering is the greatest), prescriptions may or may not be required.
Distribution and application will vary country by country.
Some countries may only allow veterinarians to administer the products, while others may allow municipal health departments or rabies control agencies to administer.  Some may allow registered nonprofit shelters to do so, and yet others may allow individuals to acquire the products directly or over the counter.  Distribution will also be decided by how the products are categorized in each country.
For example, for use with feral dogs the products may be categorized as a pest control product, and come under wildlife regulations – meaning wildlife managers and licensed pest control companies might distribute the products.  When the formulas are for use with companion dogs, they may likely come under the regulations for domesticated animals, which often require that a licensed veterinarian be involved to varying degrees.
When it comes to which delivery methods will used for stray / feral dogs, this too will vary country by country, depending on the regulations of different agencies in each country, as well as other factors.  Generally speaking, in many instances, traditional though modified, wildlife management baiting station practices (which do not involve capturing the animals and which do not harm the animals) will likely be used to treat stray dogs.
In such situations the formula(s) will likely be pre-mixed into dog food or bait, and fed to the dogs at
pre-established feeding stations which will likely be monitored by rabies control agency personnel.
In general, stray dogs will only be fed these formulas once per year.  What follows is an abbreviated hypothetical example of a feeding station, using hypothetical names:  A licensed animal control officer for Baghdad, under the direction of the Director of the Baghdad Rabies Control Department, will set up a very simple feeding station at the largest land fill in Baghdad, where a large number of stray dogs can be found year round.  Each day for 10 days in a row the animal control officer will count or estimate, the number of stray dogs which are within sight, and record the number.
Based on that number, a specific number of food bowls will be spread out in a manner to minimize the dogs interacting with one another and to minimize fighting-for-food amongst the dogs.  Each day for ten days in a row, food will be placed in the bowls, a loud bell will be rung, and the strays will be allowed to eat.  This will be repeated for 10 days in a row.  On the 11th day, treated food will be placed in the feeding bowls, and the dogs will be allowed to eat as usual.
The idea is to try and have as many of the dogs that live at that particular land fill, eat the formula on the 11th day, and then repeat this one time per year. This is expected to be enough to dramatically reduce their population, if repeated each year.  Any uneaten treated food will be collected.

Please note that any of the particulars in the above hypothetical situation may be changed at any time by government officials who have jurisdiction.

In many cases, local government agencies or their regional or national federal agencies, will often determine how the formulas are administered in their respective area.

Are these formulas intended for use with street dogs or shelter dogs?

In short: stray dogs … and as soon as possible we will begin work on formulas for feral cats.  There are multiple formulas, each different from the other, and there are multiple populations of target animals.  We are focused primarily on formulas that we can address our first target – uncaptured stray or feral dogs who run loose and reproduce, and who have little to any likelihood of ever being captured or surgically sterilized.

These are the dogs likely to die on the street either from poisoning or by other inhumane means; dogs living in the alleys and garbage dumps of impoverished countries.

Our priority is to have these painless formulas, replace poison – as a means of stray dog population-control in much of the world.

As soon as we have a good handle on the dog formulas, we intend to move immediately onto formulas for feral cats.

Where will you use the formulas?

These will first be used in the poorest countries where the animal suffering is the greatest.

Are these formulas safe, and why?

  • Yes these formulas are safe, when used as intended.
  • These formulas generally do not use “brand new” active ingredients.
  • There already exists a great deal of data on many of the key ingredients, such as zinc.
  • In most instances, decades of data are available on key ingredients, such as zinc.
  • One reason these formulas are safe when used as intended, is that they are intended to be consumed only once in a lifetime. Compare this against traditional human birth control pills, which are intended to be consumed over 5,000 times during a lifespan. Formulas which are taken many times, tend to have more side effects.

Won’t these have to be approved?

  • The answer depends on the country. In general, yes, and each country can be very different.
  • In the U.S. the FDA and or the EPA will have to approve them, depending on their use.
  • Other countries will have their own agencies approve them, to varying degrees.

Won’t animal tests have to be done?

To be clear, we will not and do not harm any animals, period. 

In our work, no animals are harmed, no animals are injured, no animals are killed.

In our clinical trials, animals are generally fed the formula one time. They then live in a home, and later on they are surgically spayed and neutered, and their ovaries and sperm are examined to determine their sterility.