Side by Side Comparison of: Great Stuff vs FlyBye Copper Mesh vs Homax Products vs Xcluder

Used for pest blocking, had not had any intrusions of insects or rodents following application of this product. Would estimate a low to medium expansion and foam density. Dries quickly to the touch and can be trimmed easily.

I filled a hole that squirrels were coming in my attic. So far so good. No squirrels.

Very Nice.

Great.

works like advertised

Works just as promised. It is amazing.

I used this to fill up the gap around a pipe that was coming in under the kitchen sink were we would get a lot of mice. I haven't had any mice since. They haven't chewed through it so that's likely what is keeping them out.

Great product, fills in crevices very well, solidifies within hours and does what its supposed to do. Although 1 star off because it is a one-time use product.

GOOD PRODUCT

This product is hard to apply because it requires a steady hand and the right angle which I am not able to do in tough spots to reach.
Also, it does not remove easily from the skin. Rubber gloves should be worn when using the insulating foam.

Definitely easier to use than steel wool or copper mesh for blocking small (less than 1 inch) mouse holes. That being said, DO NOT ASSUME blocking the holes will resolve an infestation, or you'll be reporting what a lot of people here are -- determined mice ate through it in no time. Here's what you do to put an end to the problem once and for all;

(1) Don't clean up mouse droppings. These are "hotspots" and the mice will return to them if they're left untouched.
(2) Get some poison blocks (I like "Havoc XT") and three inch wood screws (you might need some washers).
(3) Put three Havoc XT cubes on a woodscrew and secure it in to the floor/wall (whatever) where the dropping are.
(4) Replace the cubes once a week until the mice stop feeding; it may take up to a month. In bad spots, you might need to put 2x or 3x poison.
(5) Search the area around your hotspots for entry points... plumbing pipes/drains are a major culprit, but I've seen bad/amateur electrical work on exterior walls that punched right in to the vent space.
(6) Fill holes/gaps *generously* (push the applicator straw in to the hole, spray for 2-3s, then continue spraying while slowly withdrawing. The can is single use, so go ahead and use it all. You'll want to wear gloves and safety glasses. as the stuff is impossible to get off your skin.

If the mice never stop feeding, you're likely killing the neighbor(s)' mice as well, and you'll have to look at more drastic barrier methods (rodent control wire mesh). If the "hotspots" are on an interior wall (usually the wet wall where the drain stack is) the mice are coming up from the basement (or other apartments). If the hotspots are along the exterior walls, you're more likely to have mice coming in from outside.

I was expecting this to have some kind of anti-bug additive. It's just expanding foam, same as you can get at the hardware store. Calling it pestblock seems deceiving. So, the foaming part works, it will fill cracks, crevices and holes. Just not really a bug deterrent.

It is great stuff but good luck trying to use it a second time as the straw gets clogged. They explain a way to use it multiple times but it isn't realistic. It is a major area they need to improve on which would really make the product great. They probably won't as they get more money having people buy the product more often as they can only use it in one application.

Makes a great seal and really does expand quite a bit. The only drawback is the whole can MUST be used in one shot. I don't know why but if the can is stored for even a day (and even with a new nozzle) the foam will not release correctly. Stored inside at room temp.

This "Stuff" does the job but I would not call it "Great". The applicator is not perfect and it is very difficult to gauge when to let go of the trigger. I ended up with a mess of Stuff that needed a lot of trimming and clean-up when I was finished filling my void. Also, if you don't use the entire can, in my opinion, it is not worth the time to try to clean the applicator/tube for another use. The greatest thing about this Stuff is it's price when you can get it for under $7 bucks a can.

The product is easy enough to use- cleans up with acetone nail polish remover, dries firm, etc. But the applicator straw broke halfway through my first use with a brush of my hand. I'm not a large or very strong person.

This stuff is great. But the only really bad thing. Is the hose doesn't work after the first use I'm upset because I use it one time now I can't use it again.

Ineffective. Carpenter bees ate right through it in two spots to cut new holes right behind it.

Didn't work for me. Mice chewed through it the same night it was applied....I think they are mocking my efforts.

It is hard to apply

Used to seal a crack in my foundation where mice were nesting. Product sealed fine but mice just chewed it up. So much for a pest block. Ended up sealing the crack with cement and hardware cloth.

"0" STARS!! Completely waste of money!It does not work!! Pest eat right through it! I'm going to return it!

The applicator snapped at the base the first time I used it. It is very light and flimsy like a soda straw. The material itself is somewhat difficult to work with overall, a great idea, but poor execution. Also this contains some toxic chemicals and the fine print recommends gloves, respirator, eye protection to protect from side effects including asthma and extreme skin irrational. This is fine but the average weekend diy-er needs to understand this must be handled with more care than most diy products.

I bought this at Lowe's, but thought I should review it here so people will know how poorly it performs. I packed the hole tightly with steel wool and put a large quantity of this foam over the hole the mouse had made in my pantry . The next morning I opened the door and found chewed up foam all over the floor. See attached photo. It didn't deter the mouse at all. I'll try caulk next and if that doesn't work, I'll try hardware cloth.

Tried this stuff in my back yard shed. The mice just chewed right through it.

Didn't deter mice from chewing thru it. Glad I only purchased one of these

Straw for applying was broken on arrival. Used some, but very difficult to apply without straw.