From the RCC:

It has come to our attention that Jaffa oranges and tangerines from Eretz Yisroel were found in local markets including Costco.

These oranges and tangerines are from Shemita and must be treated with Kedushas Shviis.

This means:

1- Don’t destroy the fruit or throw it out.

2- Since the fruits have a special holiness they can be consumed and given to members of the Jewish community only.

3- Inedible peels should be placed in a plastic bag and then may be discarded.

4- Edible leftovers must be placed in a bag. Wait until spoiled to the point that they are no longer edible and then discard.

5- A store owner who purchased these fruits may only sell them at the price he paid and cannot make any profit from them.

6- One must remove from one’s home fruits with Kedushas Shviis once the time of “Biur” has arrived. The exact date of “Biur” is unclear for certain fruits. The time of Biur for Tangerines begins on the 13th of Iyar [May 21st] and for Oranges on the 13th of Sivan [[June 19th].

7- Therefore, at the time of biur, these fruits must be placed outside one’s house with a declaration in front of three people that they are “hefker” (ownerless). You can then bring them back into the house to consume as ownerless fruit, without intending to acquire ownership.

8- Avocadoes and Apples from Eretz Yisroel also have Kedushas Shviis.

9- Summer fruits, and all vegetables will not have Kedushas Shviis.

10- Small lemons may be from during Shmittah and one would need to be stringent and treat them with Kedushas Shviis, BUT, they may be from after Shmittah and therefore require separation of Terumos and Maasros before consuming.

We thank Rabbi Yosef Efrati Shlit”a for his help in this matter.

Vaad HaKashrus of the RCC