Regarding those eggs I wrote about, the Ministry of Health has issued the following warning to consumers:
DO NOT CONSUME eggs that bear the code 114 "מן הטבע" in the Jerusalem area, that bear a sell-by date of 28.2.2013/refrigerated sell-by date of 28.3.2013
They are likely contaminated with unsafe levels of pesticides.
There are no specific instructions, but I would recommend returning them to the store where purchased. They should agree to exchange them for safe eggs, as these eggs are being returned to the distributor.
(Let's hope they are disposing of them in a safe manner!)