Maybe with sturdy gloves and a Haz Mat suit
I'd need a mithril body suit.
I found an herbal spray that works on my dog and is supposed to be OK for cats, Wondercide (good stuff! lots of products!) and I spray them when I put down their food and they are still. They do not care for it!
I took one of them to the vet, which I do not do unless absolutely necessary, and got Revolution for him, which hopefully will give me enough of a break in active infestation (which is very mild now, but still...) that I can clean the rest of the problem up. There's a homeopathic remedy that is supposed to make their little bodies unsuitable for fleas, which I will definitely give a go once I have been 100% sure the problem is gone here. I thought so a month ago, let up my guard some, and have been finding flea dirt. No one is scratching though. Hopefully I am on top of it enough this time.