local farm

In the first photo is the cheaper bale of hay and the second photo is the slightly more expensive option of hay (both grown in Canada) For the cheaper hay If the the bales weigh 40-45 lbs each they should last a solid 3 1/4 - 3 3/4 months (without any waste) and I need 12 lbs a month for 2...

Hi all, I’m just wondering if untreated greasy hay from our local farm is okay for the guinea pigs? Thank you for your help.