FirstShield Trio for Dogs - Bathing Question

On Monday I treated my dog with the FirstShield Trio, my vet didn’t give it to me with instructions, so I just placed it between the shoulder blades. My boyfriend has been itching to give this dog a bath since we got her from the dog shelter, but I’ve been putting it off. I was out later than usual Tuesday evening and what do you know I came home to a freshly bathed dog, about 22 hours after I put the flea meds on.

Did he wash all the medication off? She’s been itching a bit, and honestly I’m paranoid of fleas so I’m not quite sure what to do. I should probably just ask my vet, huh?

Read here: http://www.drugs.com/vet/first-shield-trio.html