I had lots of bath sealing and door fixing and ahhhhhh the DIY I really don't enjoy doing. That said, this tool made it so much easier. I found that when sealing around doors in our utility room, I could squirt the sealant around, then quickly push it into tight gaps, wipe off with a tissue and then smooth to a great finish. You can twist and turn this to get into tricky areas too and once you get the knack of it, you will appreciate how well it works. I also used on a shower, bath and two sinks. I messed one up of my own doing, but everything else was very easy. Very pleased!