Hi Kaye-
The link in Brian’s post is a good read; esp. the part about clothing noise.
Wind screens are mostly useless outside. You’re going to have to hide it under clothing. This brings up another issue: clothing noise.
As someone who has had to rig a fair number of people with lavs, I can tell you it’s the one part of my job I hate. Clothing (whether rubbing on the mic, mic cable, or itself) is almost always a problem. The only two riggings that work for me are:
One: the sticky triangles
Two: the rubber mount with the COS 11X lav mic and Top Stick tape.
One time I even made a near baseball-sized ball of gaffer tape around the mic. I STILL got clothing noise. This was of course because the actress was waring a dress made of satin; the worst material to deal with sound.
Anyway, your mics are not the problem. It’s the rigging of them.
Regards,
Dave J