i have 2 puppies that stay outside during the day and come inside at 10:30 at night and go back out at 5:30 in the morning...I'm in San Diego...I cannot see anything on the bumps...they look like mosquito bites? could this be possible? if so watcha guys doing to keep em off at night? or could it be something else in my back yard? it just started TODAY and they've been back there for about 3 weeks...just changed em over on food a couple days ago...could they use a bath? flea's wouldn't make bumps would they?