The Salvation Army Thrift Store in Summerside is asking people not to leave donations at the door when the the shop is closed.

Over the long holiday weekend at least two van loads of donations were left outside the thrift shop in a big pile, and it was all spoiled by the rain.

"Some of it is just beautiful and we have to put in the garbage because the bags have been ripped open and people have gone through it and the weather has got to it, and we had heavy rains on the weekend," Marj Montgomery, who works at the store, told CBC News Wednesday.

Montgomery said much of the material was also unsuitable for donation — boards with nails sticking out of them, broken furniture, furniture with no cushions on them — and it took six people a full day to sort through the mess.

Dumped donations cost the Salvation Army in Summerside more than $15,000 a year to get rid of, said Montgomery, money that could be going toward programs such as emergency shelters, the food bank and soup kitchen.

The thrift shop is open for donations six days a week from 8 a.m. to 4 p.m.