I recently found these pearls of different color and size in my DIY Earthbox, not sure if it has to do with the fertilizer or soil purchased as I've recently learned about slow release water retention pearls developed in fertilizer and potting soil, but I would like to make sure they are not slugs or snails eggs. It would be interesting if they were eggs since I live and an apartment on the second floor. That is some serious determination to climb the wall and lay eggs in my garden! I am new to gardening and were given seeds as a gift and any help on what they are is appreciated!