Hi Frances,

I regularly sit a neutered male who still has a marking issue. I use a fleece/fabric belly band (not leakproof!) purchased from Etsy specifically for him. I have lined it with a feminine pad, but I find that using a cloth diaper insert works better and he seems more comfortable. In this doggy's case, just having the belly band on prevents him from even trying, so I don't have to do a ton of laundry. The belly band is a great tool to have in any pet sitter's arsenal. I hope it worked out for you.