HOME > Chowhound > Home Cooking >   Silpat mats- how long do
they last??    • f   • 9  I bought a pair of silpat mats approx
2 years ago. I make cookies maybe 3-4 times a year and except
for Xmas never more than a 2 batches at a time. At Xmas I
probably make 6 batches at a time over a number of days.  I
always wash my mats with a sponge using warm soapy water , hang
to dry and then store them loosely rolled w/ a rubber band on a
pantry shelf. Well I have not made cookies for at least 3 months
and tonight I get out the silpats and they feel greasy and icky.
I know that I washed them the same as always before I put them
away so I can not figure this out. So I wash them again with a
sponge and soapy water, rinse well and they still feel really
greasy, slimy almost. So I try soaking them in hot soapy water
and then use the scrubby side of sponge to really scrub them
down and they are better but only a little bit, they still feel
really greasy. So now I am wondering do they just "go bad" after
a while? Any advice?