Living w/a dog on Lasix/Furosemide or incontinence

I have a male dog w/ heart disease who is currently on Furosemide. I am gone for a good amount of the day working & our dog needs to be taken out every 2 hrs.due to the medication. I have bought the belly bands which was said to be used w/ Poise type pads. Those did not do the job. Lots of times our dog would go pee on the carpet & it still ended up on it because the pad had moved back just enough for the pee to be able to come out. So, I have come to use baby diapers. I don't know how well this would work for a big dog. Our dog is only 14 lbs. I use size 3 diapers on him. I put them on him sideways where the elastic of the diaper cups the necessary part to keep the pee enclosed. I tab the diaper & then put the belly band on which secures the diaper & works for a good amount of time during the day until I come home & during the night so I can sleep.