Are we talking bee's or are we talking yellow jackets? (Black and yellow insects) There's a big difference and you need to make sure you find out.

If you have bee's then there may be a hive close by which means you need to call a bee keeper to have them removed.

If we're talking Yellow jackets that's totally different. They want meat and sodas and pool water pure and simple. That being the case it's too late in the year for real control. Traps must be set in the early spring to catch the queen which put's the wammy on the whole bunch. But you can still put traps out now (at least 3 in the evening so you don't get stung) in areas away from where people gather but where it looks like they are congregating.

We also found that a couple of fans close by food tends to confuse their sent patterns.

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