Some people like them ripe and I've caught some with " stinky " bait but with warm weather like this I change bait about every 5-6 days with fresh bait and every 3-4 with lure I prefer FRESH bait my 
Jake
Back in the 60's, Mike Thorniley with the Washington State Department Of Game came to one of our Washington State Trappers Rendezvous. His team was just finishing their study on Coyote Population Control and he agreed to share the results with the Trappers.
He said their bait of choice was Carp, buried in a 55 Gallon Drum the year before. The honor of scooping out the drum into jars was given to the lowest warden on the totem pole.....He said "boy did it stink, but it sure brought in the Coyotes".
The results of the study..... if you caught the majority of the Coyotes in one area, the remaining Coyotes would repopulate the area in no time just by having bigger litters.

Doug