My data may be old but you will have 21 days of worms. The de-wormer won't affect the eggs so 3 weeks of hatching out. Now if they have the cat equivalent of Ivermectin it's no big deal as it stays active in the gut for three weeks.
. I know you are good on the cleaning. Just make sure you vaccum extra places: where it goes to sleep and sit. The eggs can drop when there is contact with anus/licking. Thats how they spread so quickly.
A very common method of transmission is animals sniffing feces or each other's butts. Or their licking themselves back there. The eggs can even go airborne. This is why vets assume worm infestations in all their patients that aren't strictly kept isolated indoors.
Agree. Looks like tapeworm segments. Academic really as the treatment will be the same. But be prepared for a surprise after worming. The worm will often come out whole or in a few parts. And can be several feet long.
Luckily going forward it won't be an issue. He is indoor only.
There is an end to the first issue in sight. Hang in there!
This vet is weird…
he is letting you know this is his house it happens with all Tom's eventually. I have kept cats 36 years , I look after strays from the railway our the bk of my house , my mum worked with a cat charity fostering cats dogs n once a pig lol and i currentlycare for 4 abandoned cats in my home. All Tom's will spray its part of how they make stuff theirs , it won't matter how much you scrub and change the litter instinct tells them they need to mark their territory, the fact next door has a cat will go a long way towards it. Cats smell is phenomenal your boy will be able to smell next door and he is making sure next door can smell him to 
you can try every trick n tip but in the end cats gunna cat n a tom will mark his territory chopped or not, can't stop nature. all the rehabs use it to wash everything because it melts fleas. I import it at £9 per bottle because it works that well. Better then any over the counter flea stuff.
I've been checking. Haven't seen any more.
