The vet can tell for sure about fleas but in the meantime, look very closely at the black specks. Do they kind of curl? If so yes it is flea poo. You might also see white specks, the eggs. You won’t see fleas until there are a lot.
Indorex is a fantastic product and to get rid of an infestation you’ll probably need to use it as well as the neck drops. But, Indorex is a very strong chemical and if breathed in while spraying can cause serious health issues. Be aware it kills fish/birds/insects so if you have any of those don’t use it near them.
Wear a proper face mask while using and ventilate the room afterwards for several hours before using the room again. Don’t let the cat in there for several hours after the spray. I’d recommend…
Wear the best face mask you can and long sleeves. Spray inside your vaccum cleaner pipe and bag. Vacuum everywhere. Then Pick a room, spray the carpet, seal off the room for an hr, then come back, open all windows, leave it for at least 2 more hrs then shut the windows but don’t use that room for a day or two. Then repeat this with a different room until you’ve done them all except perhaps the kitchen (no way was I using Indorex in my kitchen).
No need to spray bedding (washing machine / tumble dryer works better). No need to spray hard floors unless you have lots of gaps.
Yes to spraying sofa and cat bedding but make sure it has dried before sitting on it.
Shower and wash your hair after you’ve finished with the Indorex.
Do laundry constantly.