I am not an expert at all here, I only have 2 BP's. I can just share my experience. My daughter's adult female BP didn't eat for nearly 8 months and finally ended her strike. We followed all of the expert advice on this forum, which was interesting, but she didn't eat. Some of it was as follows:

-- make sure first of all that conditions were perfect (temps, humidity, warm and cool hides, etc).
-- rearrange things in the cage
-- take for snake a car ride
-- let snake crawl around outside and get some sun
-- blow dryer trick on frozen/thawed rat

The snake continued to look healthy, and she was admittedly quite hefty when she started the strike, so we didn't take her to the vet, although as time went on we were tempted.

Last month my partner got involved to try to help my daughter, who was very worried about her snake. He gave the snake a live mouse. He didn't want to give a rat because he was worried about injury, and he supervised the whole time. The snake was only mildly interested, but she got really pissed off when the mouse entered her hide (she's very cage defensive) so she then killed it and dropped it. Didn't eat it. (I would have recommended a baby rat but he did this on his own and didn't tell us because he didn't want us to feel bad about making a live animal go through a traumatic experience. )

Next he read up on BP more and learned that they found gerbils irritable. He told me he bought one, for $15, at the only place in town that sells gerbils. He first rubbed the frozen rat in gerbil litter, but the snake didn't care. And again, without telling me, he put the live gerbil in the cage the next night. The snake killed it and then ate it but not very enthusiastically. But at least she ate. So my daughter stopped freaking out.

Then two weeks later a frozen rat was rejected. Then two weeks after that she finally ate a frozen rat appropriate to her size. She was not enthusiastic, and she basically ate it in the middle of the night after we gave up on her and just left it in the cage.

We are only going to offer every 2 weeks for awhile to make sure she's hungry, and if she consistently takes them, maybe offer more often if acts hungry.

So basically, our lesson is unless your snake is sick, they will eventually eat again on their own. You just have to be patient. They are picky, inconsistent eaters, but I figure a healthy snake will not let itself starve to death.