Indorex - how long till it's safe for cats to walk/sit/sleep on?

[hilariousnamehere]

Can anyone tell me how long after spraying Indorex is totally safe for cats to come back in and walk over / lie on / sit on the treated surfaces?

Vet has advised doing the house with Indorex despite no actual flea sightings and I'm terrified of causing any harm to my beloved pair while trying to help them

I am a sad mess and have spent today having a breakdown about the logistics of doing it, but want to eliminate it from our list of what is making DFluffyCat sad and vomity.

Any experiences welcome! They're both back on regular Stronghold too, but the tablet isn't an option at the moment due to exclusion diet for digestive issues and itching (hence the advice to treat house just in case it's fleas not allergies, before doing bloods etc).

It's an hour I think, I just do the carpets and floors not the cats bed,I do that on a hot wash.

I have used Indorex several times without any issues whatsoever. I did the whole house a couple of weeks ago. All 3 cats kept outside for an hour with all doors etc shut inside then opened up windows and doors to circulate air. No live fleas spotted since and cats totally fine. Spray along the skirting boards and close to the ground with a light sweeping motion back and forth.

Thank you both, that's reassuring!