Where to seal with spray foam to keep lizards out of lanai?
 

I've read that they get in from the corner where it meets the siding. Do I just need to seal the hole at the bottom corner and the gaps around that? Or do other areas need to be sealed?

I have attached a photo of mine.

In my opinion, trying to keep lizards out of your lanai by spraying foam is a fool's errand.

No food (no bugs). No lizards (for the most part).

You and your better half could try going out at night with a flashlight, one inside and one outside and look for light coming from the opposite side. I would try with the flashlight inside shining out and outside shining in. If you see light this would be an area to seal. You may want to consider a color matching silicone caulk for inside.
Also, if you have any drains, they can get in that way, but you do not want to seal these.
Look at the sweep on the door, these do wear out and could have gaps.

Been in home for 10 years last month. Never had an Anole, Lizard, Gecko in my lanai. Stucco home. Sealed the door threshold right after we moved in.

My cat owns the lanai. Geckos get in but never get out

I have drain holes in screen frame so water will run out. The lizards occasionally come in. I use my fish net and remove them. Funny some get in and can’t get out. One ran right by hole couple times when I was trying to catch it. Then they’re the ones that just give up and let me evict them. Most probably squeeze in between door perimeter frames, not much do about that?

I put clear silicone caulk all around the bottom of my lanai. They used to squeeze under the lanai.

I don’t recommend foam.

Since then, the only lizards to get inside run through the door when I open it. They are fast!

Same here! We have two Maine Coons, and they act like Velociraptors when they see a gecko. The only problem we have is if only one of them is outside, they will bring it in so they can both play with it.

I put sticky strips in the corners.

that is where they enter/ exit via the screen door threshold in our home, but we haven't sealed it yet. Silcone would be best, expanding foam is a bit uncontrollable.

Cats also guard the lanai, though they taste awful, per Sage, the hunter cat of our two cats. . .

They may be pest but they do serve a purpose when/if they get in. They will eat and take care of any other bugs that get in the patio and save them from getting into the home. Yes they are a nuisance but if they can’t find water and food once they get in they will not make it out.
Good luck as we all moved into their territory LOL

I make pets out of them, I love them.

Mr. Chip....I use steel wool to seal up those areas. Stuff it right up there

I would be concerned that steel wool will rust and stain your concrete and stucco.

We grow a lot of plants in our lanai so the lizards are always welcome. Sort of Mother Nature's insecticide.

If you seal up everything your lanai will flood during storms unless it’s enclosed. I found that by putting a strip at the bottom of the screen door it keeps out 99% of them out

Little lizards are a way of life down here. They are harmless and in my opinion impossible to exclude from family gatherings in the lenai

Lizards are good
 

I personally like the lizards in my lanai. I understand that a lot of people don’t! However, think about what lizards eat, bugs! If you enjoy your lanai what would bother you most bugs or lizards. I once saw a small gecko with a huge cockroach in its mouth so be careful what you ask for.

QUOTE=MrChip72;2382857]I've read that they get in from the corner where it meets the siding. Do I just need to seal the hole at the bottom corner and the gaps around that? Or do other areas need to be sealed?

I have attached a photo of mine.[/QUOTE]

Totally agree. At least the "lizards" do eat a LOT of mosquitos !

If you seal 'all around the bottom', how does the water drain off when it rains?

A long time ago we had a cat that would occasionally bring one in from the lanai. It always disgusted me when the tail separated and kept moving. My comment to her was usually eeeewwwww!!! My husband praised her hunting skills ...

My husband used expanding foam under the siding inside the lanai. What a lot of work! cutting it to the right shape etc. Much fewer anoles still got in, but through the tiny holes in the door sliders. I could try to make the holes smaller but since only one or two anoles come in per year, I just use heavy but harmless water spray to train them to get out. I find that it’s always the same anole and his mate. They are hard to train because they are territorial. Sometimes it takes a month of daily persuasion to get them out. But after that they give up and become suspicious even when they are outside and I enter the lanai. They are after insects. What also works, is eliminating the insects the anoles come for, by spraying around a high concentration vinegar - if you have an enclosed lanai.

I’ve never tasted cat!

We've never had an anole in the house or inside our screened (and glassed, when we close the windows) lanai. We did have a few frogs though. One on the wall in the bedroom, one on the mirror in the guest bathroom, and one hopped in when I was pushing the screen up in my office one night to open the top window and close the bottom. The cat saw all three and just stared at them. She also ignores the anoles that crawl ON the screen outside the lanai, and she's been known to ignore the squirrels that run around on the screens outside as well.

Just be careful bringing your small dog or female cat around the house. She eats those.

Love ‘em
 

I like the silicone idea, but I will say that they eat bugs (apparently), and I like having them around. They remind me that I’m in this great place in this great state. They give me a tropical vibe.

I often see lanai installations that never had thresholds or weatherstripping installed below or on door. Instant access if doesn’t exist or weatherstripping is not closing the gap.

I've sealed off with caulk almost every hole and crevice in my two patios. I still get baby lizards, baby snakes, and larger lizards occasionally. I usually catch them and release them in the yard. They look happy when I release them. I saw one time I opened the screen door and a lizard got in that was hiding under the door. But caulking has limited most entries.

:icon_hungry: :rofl:

grammer fail for sure!

You are fighting a losing battle, adopt a cat.