Ok this may be a dumb question but,do any of you think that maybe once in awhile you can put grape,berry,kiwi-strawberry, or whatever flavors of propel in their water dish??? Kinda as a treat or just something different maybe once a week or once a month. Or would it be bad for them??? Can anybody tell me? I'm not too sure what all they put in it. I could find out if that would help.