u/Few-Roll-756

So I'm a very hygienic person and I have the necessity to clean my photocards. I've collected for 4 years straight and I've always used pharmacy alcohol. So far they are 10/10 and nothing has really happened to them, but I'm wondering if it's really a good method or if I should change it, since soon I'll receive 20 photocards and I don't want to ruin them:(