Need ideas of what to write on a sign

I just found a packet of a thousand plastic shoe covers (galos) so I'm going to take them to the local (very muddy) cemetery... I was to write a sign that says something like, "free galos, but put them in the garbage bin properly afterwards: don't be a dick and litter."

So... "Ucretsiz galos... AMA...

Ölenlerimizin anısına saygı göstermek için çöp kutusunu kullanalım.

Or...

"Burada insanlar yas tutuyor. Çöp bırakarak onları mutsuz etmeyin."

Or something better?