[header] How to deter coyotes [title] Keep food sources out of reach. [step] Coyotes are attracted to easy food sources that might be found outdoors, including garbage and pet food. If you want to keep coyotes away, make sure you don't give the access to these easy targets. 
For instance : [substeps] Keep garbage outside in containers with locking lids. If you feed pets outdoors, clean up any leftover food as soon as they are done.