Call Cooperative extension and ask for a list of local bee keepers they woul love to have them. If I was nearby I would grab them.
OP indicates 90716 as his location.
Feral colonies are in high demand for their expected genetic diversity in an attempt to stave off Colony Collapse Disorder from the failing/problematic over-hybridized inbred bees in the rest of the industry.
http://www.backwardsbeekeepers.com/p/bee-rescue-hotline.html
IF they are honey bees, a local bee keeper would love to take them off your hands for free. Above is one local group.
Sell them on Ebay, but advertise it as an Ipad :^P
Why not just leave them alone?
A swarm of bees like that happens when there's a hive nearby (you probably don't even know about the hive, but it's likely within a few hundred feet) and the hive became overcrowded. The bees split into two separate groups; roughly half stay and half go with a new queen (or often the old queen.) They'll form a group like that in your persimmon tree, surrounding the queen, while a bunch of them go searching for a new home. Once one finds a home, it'll come back and do a dance. A few will follow him. Once enough are coming back doing the same dance, the entire group will leave to a new home. From the time they first form that swarm until they leave (for good), is anywhere from a couple hours to about 72 hours. It's rarely much longer than that. If you just leave them alone, they won't bother you.
I'm also surprised that a pet got stung by them, unless the pet was able to actually reach that swarm. Most of the time, those swarms are incredibly well fed on honey, and just really not in the mood to sting anyone.
In fact, I just dealt with 3 such swarms myself this weekend. The first two, I was dressed like crazy, making sure I wasn't going to get stung. But after realizing that the bees weren't even landing on my face mask, and generally not on my clothing at all, I took care of the 3rd group of bees while wearing just shorts and a t-shirt. I didn't get stung once, despite tons of bees swarming around me. I posted a video in a thread & will probably update the thread with pics once I get a chance in the evening.
http://forums.anandtech.com/showthread.php?t=2245770&highlight=bees video in OP. Just shorts and tshirt while taking that video; zero stings.
Also, since you have a bunch of fruit trees (and logically blossoms), it sounds like you have a decent amount of space. If you can get a couple of the hive boxes, it really is incredibly simple to move that swarm into a new hive. You could end up with a shitload of honey, more or less for free.
A swarm of bees like that happens when there's a hive nearby (you probably don't even know about the hive, but it's likely within a few hundred feet) and the hive became overcrowded. The bees split into two separate groups; roughly half stay and half go with a new queen (or often the old queen.) They'll form a group like that in your persimmon tree, surrounding the queen, while a bunch of them go searching for a new home. Once one finds a home, it'll come back and do a dance. A few will follow him. Once enough are coming back doing the same dance, the entire group will leave to a new home. From the time they first form that swarm until they leave (for good), is anywhere from a couple hours to about 72 hours. It's rarely much longer than that. If you just leave them alone, they won't bother you.
I'm also surprised that a pet got stung by them, unless the pet was able to actually reach that swarm. Most of the time, those swarms are incredibly well fed on honey, and just really not in the mood to sting anyone.
In fact, I just dealt with 3 such swarms myself this weekend. The first two, I was dressed like crazy, making sure I wasn't going to get stung. But after realizing that the bees weren't even landing on my face mask, and generally not on my clothing at all, I took care of the 3rd group of bees while wearing just shorts and a t-shirt. I didn't get stung once, despite tons of bees swarming around me. I posted a video in a thread & will probably update the thread with pics once I get a chance in the evening.
http://forums.anandtech.com/showthread.php?t=2245770&highlight=bees video in OP. Just shorts and tshirt while taking that video; zero stings.
Also, since you have a bunch of fruit trees (and logically blossoms), it sounds like you have a decent amount of space. If you can get a couple of the hive boxes, it really is incredibly simple to move that swarm into a new hive. You could end up with a shitload of honey, more or less for free.