Wrong advice. Pyrethrins or Acephate will not "chase them away". If you know it's wasps, you need to locate the nest and treat it directly. Indiscriminate applications of pesticides may not be effective and may be detrimental to your dogs' health.
SO TRUE!
Sevin (carbaryl) is highly toxic to wasps (and fish as well), but just dusting it all around in "problem areas" isn't a good solution.
Can you describe the "wasps" that are causing your problem? Knowing the type of wasp, can help in determining what type of nest to look for.
If you see wasps flying around, foraging, you're wasting your time, killing them. The nests can produce workers just about as fast as you can kill them off. If they're attracted to protein (like the bald faced hornets I have issues with), they won't bring the dust back to the nest either, so dusting wont help.
BUT, if you're not allergic, just stand around for a few minutes (preferably out of their direct flight path), and watch to where they go. The workers will spend a few minutes foraging, and then will return home. Pay attention, and they'll lead you to the nest (which you should keep a serious distance from). Then, wait until dusk, and empty a few cans of wasp spray on the nest (if you can see it). This is pretty easy with a nest in a bush or tree.
One issue I had, was that ground wasps create a nest that isn't visible (except for the entrance). Since the wasps will avoid the spray, if you just flood the entrance, they may find another exit. I've had this issue with wasps that got into a block in my foundation, through the rotted sill of a basement window. I ended up handing my wife half a dozen cans of foaming wasp spray, and with one in each hand, I instructed her to keep the opening entirely covered and closed with foam, as I chopped the sill out with an axe.
Once the nest was exposed, another can finished it off. Probably not the smartest thing to do though.
With a hole in the middle of a yard, many people will suggest a cup of gasoline. Fire isn't your friend here; just the fumes, but I'm not a fan of poisoning the ground water.
BTW, while wasps won't re-use a nest (and actually actively avoid old ones), they do have particular tastes in housing. If a crack in your wall attracted them once, and they're in the area, they may come back (this is an issue I've had several times). This is where sevin is GREAT. Unlike the sprays, which stop being effective at killing within days (so they can move back in), if you dust in an enclosed area that doesn't get rained on, it can deny the space to insects for years.