I blew a lot of my money when i was younger, something I don’t regret spending lots of money on is decent tools, they can last a lifetime if taken care of and can save you money in the long run if you learn to do your own work. Sometimes stuff now is a better investment but it can be super specific depending on your situation.
I’d try to strip and clean any time I come home in that environment. Set up your entranceway so you can easily remove your clothes and shoes and put them in a bag or bin. Santitize the entranceway, wash your contaminated clothing, and wash yourself frequently.
I would wear long pants, ideally waterproof ones or at least thick enough to stop splashes from getting on your skin. You could also wear a mask while outside to help keep your fingers away from your mouth and nose.