Local gardeners often clean my pastures in exchange for the great fertilizer. Several enterprising people around the country have dried, ground and sold the manure in small bags as specialty food for house plants. You can get fiber tested and it will help you choose stock if you are breeding specifically for fine fibered llamas. However, solid conformation should never be sacrificed for fiber quality, find llamas with both if fine fiber is your goal. If you've never owned large stock, do not think owning llamas will be like having a pet dog because it won't.
All large stock involves a certain amount of knowledge and know-how.
Llamas can die from heat stress. If you are in a hot area, you will need to explore the methods other breeders in your area are using to safeguard the health of their llamas. Some will have fans and misters and shade is essential. My area is not hot enough to warrant fans or misters, but on our hotter days I cool the barn by spraying the walls and wetting the sand floor with a hose. Many of my llamas come up eagerly to enjoy having their legs gently sprayed.