make sure they are hive beetles there is a sap beatle that looks almost identical to the shb but just a shade bit smaller. The sap beetle will not slime a hive or harm the bees. We just discovered shb here 2 years ago. the old way of keeping hives in the shade is gone I keep mine in full sun. As iddee said a strong hive will keep them in check. I have 2 outyards that have shb I dont move bees in or out of them yards and they are doing fine. only thing is when you pull honey you cant let it set you got to extract it within a day or 2 or they will slime it up bad for you.
I hate those tiny little bugs more than I have words to tell! Iddee and RR give wonderful advice. If you see more than a few of the SHBs and your hives are a little weak you could consider the different types of traps and see if any of them might be right for your situation. Most of the time they aren't a problem in a strong hive..... my thinking though is that if your hive isn't strong, or if you have a heavy infestation you may not want to leave yourself without some sort of "plan b".
At the very least move the bees into a place where the hives are in FULL SUN. For some reason those horrid little creatures thrive in shady areas, even if there is only a little shade for part of the day. If you can't move your hives don't panic you can still do a few things to help the bees fight off the invaders. You can try spreading fireplace ashes under the hives fairly thickly..... we have done that for two seasons now and have noticed a marked decrease in the number of SHBs that we see. Lime might work, but I have no experience with that near the bees and the same would be with things like DE (diatomaceous earth).
Here are several links with information on the various kinds of traps that you can make. There are more but you'll get the picture with these. You can also go to youtube and search for fatbeeman's videos, those are great!