Most wurth stuff is really good mate and its in a big tube that goes in a caulking gun ( think that's what it's called) so you can cut the end to whatever size. The ones we use at work is kd bond and seal or spray sealer , and yep neatest way I've found is with your finger to wipe along it.have a rag with a bit of thiners on it to keep cleaning off your finger and I end up with a pretty neat job. Practice makes perfect tho and you gotta get just the right amount in to start with or it ends up everywhere