Dap 18354 Seal 'N Peel Removable Caulk, 10.1-Ounce

It did a good job sealing my drafty windows.

Ok key thing is that there are (or where) two versions of this product... a regular version that has been available for years and is still available and a low-odor latex version which was available for one or two years and has been discontinued. The regular versions works wonderfully except that, as some reviewers point out, on the day of application it smells bad (kind of like model glue from when you were a kid). That smell goes away. I have used this for a dozen winters on the window in our master bedroom for about four months each year and the smell has always gone away very quickly (one or two days). My wife is very sensitive to smells and she has never had a problem with it once it has fully cured. The low-odor latex stuff is no longer being made and should not be used if you somehow end up with a tube of it. I have never been unlucky enough to receive any but I researched it once I saw all the bad reviews popping up for this product which had previously worked great for me. My understanding is that the problem is that if the latex stuff is not absolutely 'fresh' when applied it dries hard and can not be removed without damaging paint. If it has been sitting in a warehouse waiting for someone to order a tube over the internet then it is generally not 'fresh'. You should be able to tell the difference between the regular and latex versions of this product because (1) the latex version will be labeled as "low-odor... latex formula" on the tube (2) the latex version will not smell like 'model glue' and (3) the latex version will come out of the tube white and dry clear whereas the original formula comes out clear and dries clear. If your tube matches any of the above criteria do not use it.

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Worked a treat on my sash windows

Wish this stuff was cheaper. Nobody in my area stocks it. I used this around my window AC unit and the fact that I could smell it inside meant I did have an air leak as suspected. Had tiny bugs getting in for most of the spring and summer and I started to look for temporary yet outdoor-rated sealing solution. Most people say it's hard to apply and honestly I did not notice that. I followed advice in other reviews and cut the plastic tip lower and wider and that just ended up using up my entire first bottle entirely too quick. Cut the tip narrow towards the top and it was like any other caulk I use, but I use caulk guns much more often than most people so I might just be used to it. If you apply too much the overflow will drip before drying a bit, had to re-do the tops of the sides of my window AC. Just cut the tip towards the top like any other caulk and press it in to where you want it applied, squeeze gun just enough to get a tiny neat seal like you see in pictures and on TV. See how it dries, re-apply if necessary. Buy 2 tubes of this stuff at least. Works great. Has a fairly noxious odor, if you used this indoors I would not sleep in that room for a few days.