To my going to a pet shop?
Of all the places, why that reaction there? its a handy place for various supplies, such as activated carbon (used in water filters) water pumps for circulating coolant in condensers, air pumps, elemental sulfur in the form of solid sticks, intended apparently for whatever reason to be put in the water bowls of dogs in hot weather, and as such, this roll sulfur is much cleaner and of superior purity to the agricultural kind that is found in sulfur candles for fumigating places, dusting plants and suchlike, as well as carrying methylene blue, a useful stain for samples needing to be viewed under my microscope. And there are the occasional other useful bits and pieces of that kind to be had here and there too.
And I'm on quite good seeming terms with the guy that owns the place, he's given me discounts in the past when I've come up a bit short of having enough money to buy whatever item it is that I've needed, and of course, there was that big beefy pump too that he sold me at just its cost to him. making no money on it, just recouping his losses.
Plenty useful things to be had from pet shops at times, got that new stiff-bristled brush mounted on the end of a really long flexible braided wire that is perfect for unblocking condensers, absolutely MADE for the job, almost. Beats the shit out of pushing a rag one way and then the other using a straightened out piece of coathanger wire, plus of course, getting all the tubing I need and at a good price too.
If you were thinking 'lab animals' couldbe, then you can banish that thought in all haste along with any others like it that are connected to me. Because I don't DO animal testing, I absolutely, utterly and completely loathe the very thought of being the perpetrator of such evil. Whilst I know why big pharma etc. do it, that doesn't mean, even though I cannot stop it, that I either support it, or would EVER allow someone who experimented on animals to use my lab. And I don't only mean that I'd not permit the use of animals in there, although I won't ever do so, I just wouldn't let someone who did it anywhere else use the place either. I have never once, nor will I ever make use of animal research subjects.
The only time anything other than human has been knowingly brought in there, is when The Bitch From Hell had it as her bedroom, and at which point it wasn't a lab at the time, since The Bitch needed somewhere to sleep whilst It was my housemate, she stole a kitten (two, one a much younger one and one a young teenage-to-adult cat), the fucking creep. I didn't know where from, and there wasn't much I could do in any case other than make sure they were cared for.
But when the lab is what it is meant to be, not the festering nidus inhabited by some inbred, vaguely anthropoid mammalian borderline Bitch From Hell tick-impersonator I'd never even let animals enter the room, as I wouldn't want them breathing any gases or fumes, or rolling on the floor and coming into contact with any possibly present harmful chemicals or any sharp objects.