I have two 'Bloodgood' Maples, from seed, that I bought on ebay and are planted in pots. This will be their third year with me. Something is eating the leaves. A visual inspection did not uncover any pests on the plant. Any guesses on what might be responsable, and the best way to treat it? I have some Ortho Bug-be-Gone on hand, is that safe to use on Maples? Some examples of the damage can be seen in the two attached pics. What ever is snacking on my plants is only eating the softest parts sof the leaves, either eating the side out of the leaves that are already opened, or the tips of them as they start to open. In the second pic you can also see a branch of my 'Shaina', which I'm assuming will also need to be treated.