About Layne Labs

Our mice and rats are housed and bred in a United States Department of Agriculture (USDA) licensed 60,000 sq. ft. facility in Arroyo Grande, California. We’re fanatical about sanitation, animal nutrition, and providing a healthy living environment.

This means that when you purchase from us, you can count on receiving a healthier animal, high in nutritional value, and more robust in size.

  • A constant flow of fresh air
  • Clean drinking water
  • Fresh food
  • Clean dry bedding
  • Natural night and daylight cycles
  • Every cage is cleaned and inspected daily
  • See our Humane Handling Policy

We conduct euthanization in a carbon dioxide chamber, tuck their legs and tails neatly underneath their body and freeze them immediately. When completely frozen, they are counted into re-closable freezer bags and stored properly to prevent freezer burn.

We also offer shelter to misplaced, unwanted, and ‘broken’ pet reptiles and find loving families to adopt them. Occasionally they stay with us, due to health issues. And as far as we’re concerned, that’s OK too.

Thanks for taking time to learn about our company. Your feedback is really important to us, and we look forward to serving you.

We guarantee our products will meet your satisfaction otherwise we will refund 100% of your purchase. We will email you a return label so you can ship your order back at no charge. For all returns or concerns, please contact customer service at 805.242.7915 or email [email protected]


Quick Answers to the most commonly asked questions. Learn more about our product and services, in one convenient place.

Humane Handling Policy

We believe the animals we raise are every bit as important as the wildlife they are destined to feed. That’s why the Layne Laboratories Humane Handling Policy hangs on every door, in every hallway, and in every office in our facility.

Get Wild

While it might not sound yummy to humans, frozen mice and rats are the natural diet (and the perfect get well food) for wildlife, and can play a role in the survival of a sick, injured or orphaned wild animal.


The decline of Earth’s biodiversity and the need for sustainability practices mandates that we need a new approach to conservation that conveys to people of all walks of the crucial interdependence of plants, animals, people, and the environment.

Wildlife Rehab

Wildlife rehabilitation is the process of caring for injured, orphaned or sick wild animals and releasing them back to the wild when they are able to survive on their own. Humans are always a young wild animal’s last hope for survival, never its best hope. A young animal should only be removed from the wild after all avenues to reunite it with adult animals have been explored.


Zoos demonstrate leadership in animal care, science, education and sustainability; provide the highest quality animal care, advance research, and scientific knowledge in conserving wildlife. They teach and inspire people to protect wildlife, natural resources, and habitats.