Have you read or heard about Thundershirts? The are intended to help calm dogs down in a way similar to swaddling a baby. Here is a link to their website for information: http://www.thundershirt.com/?gclid=C...FVAaQgod-SHemQ
If you decide to get one for Bentley, you might consider shopping at the Havanese Rescue shopping site, http://www.havtohavit.com/index.php?...bed89c64d62b5f
The price is the same [$38] and the profits go to Havanese Rescue.
Another option which does not solve the dog's problem of excitement peeing but keeps your floors clean is a belly band. If Bentley is only dripping and not emptying his bladder, you can use a light or maxi pad to line the belly band. If he is emptying his bladder, you can use a Poise incontinence pad to control the liquid.
Belly bands can be purchased on Amazon and eBay, but there are some wonderful people on etsy.com who make their own and sell them. The people I have dealt with on etsy have been really helpful.
Buster needed to use a Poise pad with his belly bands in the house because he was having "accidents" and my DH was unhappy about it. Because of the thickness of the pad, I asked for advice from the seller as the sizing. She suggested a size and said that I could try it on him with the pad and if it did not fit I could return it for the next larger size.
I bought several so that I would always have clean belly bands while the others were in the laundry. There are lots of colors and patterns to choose from as well as styles. I found that I needed a bright color instead of a darker one so I could see it and remove it before taking him outside to pee. Sometimes I would forget, which was not a good thing.
Some of the belly bands have a waterproof layer in them, which is fine for dribblers. You cannot dry them in a hot dryer, just on delicate, and some of them need to be line-dried.