2021 - What I did today

It's been a strange few days. Nextdoor have a 16 yr old rather mangy, black, ex-feral cat. It offers them a great deal of comfort although it's not particularly friendly to outsiders. It's deaf as a post and always seems to be scratching even though it is dosed with flea stuff regularly so I'm told.
Tues nextdoor had the district nurse to visit to dress her ulcerative legs (poor woman, the skin on her good leg has now broken down so she has both legs wrapped up in bandages) nextdoor lady said she had itchy knees and nurse said it was because she had fleas and had caught 4 just then. Lady was mortified and ordered spray from Tesco's on next week's order.

She walks with a zimmer , he uses two sticks and on Thurs he fell to the floor and cracked his head on stone the fire surround. Blood everywhere. Ambulance called and I was asked to help put away their Tesco delivery and offer to clear up th blood from the floor. He gets carted off to hospital for wound care leaving her alone and quite vulnerable, luckily they sent him home around midnight. Half an hour later she falls over! They know not to call us to pick her up as I haven't the strength, or skill. They ring their other neighbour, who obliges. Fri he had several problems with his Tesco order which I helped him sort out and I insisted on him showing me whether he could use his new smart phone (he couldnt)so we had a training session - the blind leading the blind there. Then to cap it all over the past few days P and I have been bitten by something, I put it down to midges in the garden but this morning I found two fleas on my ankles, obviously imported from nextdoor! I'm afraid I told them I wouldn't be visiting until flea situation was sorted, with the attendant feelings of guilt.

Any advice re fleas gratefully accepted.