100E RTV White Silicone Caulk (12x10.1 fl.oz.) - 100% Waterproof Silicone Sealant for Kitchen and Bathroom, Shower, Toilet, Sink, Window and Door, No Yellowing | White, 12 Pack

This caulk is the unsung hero of rodent defense. PI used Akfix 100E RTV Gray Silicone Caulk to seal up the last remaining mouse-sized loopholes, and it did exactly what I needed it to do. It flows smoothly, adheres well, and cures into a tough, flexible seal that says, “This gap is permanently closed.” It’s perfect for those awkward cracks and seams where steel mesh ends or where foam alone just isn’t enough. Once cured, it looks clean, stays put, and gives peace of mind. Combined with proper gap prep, this stuff turns “maybe they can get in” into “absolutely not.” If you’re serious about mouse-proofing and want a professional, durable finish, this silicone caulk gets the job done without fuss.

Exactly what it is, gray silicone.

Works great! Super fast shipping and great quality.

I got this to reseal my Daughters shower -- for whatever reason she tried doing it herself -- the Caulk that she used wasn't setting up (she tried two kinds -- evidence out to trash) -- I know she did something wrong but I don't know what -- off to Disney she went while I cleaned the newly placed Caulking and redid her work -- this Silicone caulk had the lowest odor of any that I have used in my 74 years -- it feathered well, cured with no issues and the color matched perfectly (it's not easy to find Gray Caulking locally) -- it has a fairly long workability time so I was able to wipe off the excess without any issues -- I tried tapeing the lines but the tape wouldn't stick to the tiles -- no I didn't clean the tile first -- it's her house, not mine LOL -- I checked two days later -- the Caulk is firmly in place and ready for use -- I would order again but not soon because I'm keeping the second tube for myself -- pro tip: if your caulking gun doesn't have a lever to switch to a no-drip mode I suggest you look into one -- I ordered one at the same time and was really pleased that I didn't have to continually release the pressure after every squeese

Goes on smoothly, cleaned up our shower, looks good!

Ordered a four pack and finally opened the product after 6 months. All were bad, except for one that provided 1/2 the content before it split the seam of the tube (see photo). Yes, I was using a battery-operated caulking gun and have not had this issue (with splitting tubes) at all with tubes from different manufactures. Maybe if one uses the product within the first hour of receiving it, maybe it will work (if the caulking gods are smiling on you:). Would not recommend this product.

I have to get this product a 3-star rating and it's not because of the seller of the product I've learned on RTV silicone that it has a shelf life of 3 months and if you do not use it it will no longer be good whether you open it or not know where does it say in the description of this product of the seller nowhere on any of the tubes themselves it does tell you once you open it how long it'll last I found out from a buddy of mine I bought 12 tubes a full case and advance of a project I was working on waiting on some other parts by the time I got to use them every last tube was no good that's not a fault to the seller it is the product itself has a shelf life that nobody talks about I found out from a buddy of mine's dad who does windshields for a living so for anyone buying our RTV silicone use it in 3 months or it's no good

Definitely holds up well. Does have a significant smell but that goes away quickly enough. Love the gray match and how fast it cures