Yes ~ I have been a member of the York County Beekeepers' Assoc. for 7 years and am the current President of the Assoc.
We use mostly natural was foundation ~ we were started out with Pierco foundation when we were introduced to beekeeping but I don't like it. We are researching the most natural mite treatment we can find for possible use this fall. Hop Guard looks promising ~ it is a treatment made from the hop plant. Unfortunately it not approved for sale in PA yet ~ although it is approved in MD.
Swarming is also a good mite control as it breaks the brood cycle ~ but not good for honey production.
My dads cousin belongs to the beekeepers association ,but I'm not sure. Matter a fact he keeps 5 hives here duing the summer. he brought a group out here two summers ago t look at his hives Do you know a Eugene Hoover?