The Shark Wandvac Cordless Self-Empty System + HEPA filter is perfect. I love this vacuum so simple to use. Find a good spot plug it in when you need a vacuum you just pull it off. There’s no cord so he can go anywhere. He needed to go when you’re done put it back on the base and the very strong vacuum sucks out All the debris into the base and then when the base is full after several times of vacuuming, you empty it. Love it.