I’ve had a stray cat living in my back patio for a year now and a month ago he was attacked and so we had him treated and decided to get him microchipped and now we’re keeping him indoors. I’ve noticed since the attack he’s lost a reasonable amount of weight—he weighs 3.2kg at the moment. He eats amply just as he did before and has snacks in between with plenty of fluids. He’s toileting well and everything but he doesn’t seem to be gaining weight. I looked into worms and cats and one thing I do notice is his stomach is slightly round but not alarmingly round, and he hates me petting him there too much. At the vet he had a blood test and he was fine and the vets didn’t see too much issues with him. I saw that our local grocery store sells dewormers for cats and I’m thinking if I should just try it and see if it’ll help if he does have worms? Is it ok to give to a cat even if you haven’t confirmed if it is worms or not? Will it affect him? I think I rationalised it by thinking it’ll be safe since it’s not something that needs a prescription and it’ssold locally. I guess I wanted to see the opinion of other cat owners first before I give it