Fruit fly proofing

[johhnyfever]

I have a large vivarium with a sliding track door for darts. I also have an exo terra that will house tree frogs. There are a couple of points in both that I can't FF proof, not without compromising circulation in one, and not at all in the sliding door at the top of the track.

Petroleum jelly/ Vaseline around the edge of the track or the inner edge of the screen was suggested. I'm not sure if this would be a health issue for frogs, particularly since it's in an area where they typically won't be.

any thoughts? Is this safe? I've read many ff proofing threads, none of which really address my issues.
Thanks

[deranged chipmunk]

Petroleum jelly should be safe. I don't know if it will prevent ff from escaping. I know it works wonders with roaches, but not sure about fruit flies.

You can fruit fly proof the one enclosure and not sacrifice air flow by using mosquito netting glued to the area needed.

Without seeing the tanks, it's hard to offer accurate advice.

[kueluck]

and if you need to plug the Exo Terra doors on the hinge side I fold up paper towel and place it there. After it's in place mist it down and it will conform the the glass door.

[Tongue Flicker]

It's very hard to actually fruit-fly proof an enclosure. Just keeping it clean and odorless inside sometimes is not just enough. They could fit into even the finest of vent holes just to lay and drop their eggs inside