I?d say better than 50/50 although not sure how I could defend a number for percentage of acceptance. Let?s say ON A MORE LIKELY THAN NOT BASIS to accept queen cells.
Bees can keep a person guessing: I am dealing with hive with no eggs or larva and I could not find a queen. I believe this hive swarmed a couple of weeks ago? So with no queen in site, I added grafted larva. No queens cells were made from the grafts. So I am guessing the queen was on a mating flight when I inspected. This afternoon when it cools, I will inspect and determine what is going on with this hive???
Cheers
Update 4:30: I found the queen on frame 10, a food frame. No eggs, no larva, plenty of stores. So, give this queen another week. This particular hive was started from a package last March, a support quality hive. It?s a fun, challenging hive with a hard to spot dark queen.