Legal highs have been banned at this years T in the Park which holds 85,000 party troopers.
Bosses at DF concerts said any legal highs found on people at T in The Park will have them confiscated with support from Police Scotland.
Revellers will be well warned about legal highs as high awareness of posters and police presence will be in place throughout the long weekend.
In a statement: “Selling these substances is prohibited and anyone found with these substances in their possession will have them immediately confiscated.
“It is important that music fans understand that ‘legal’ does not mean ‘safe’ and that these substances can cause serious harm especially when mixed with others such as alcohol.
“The terms ‘legal high’ and ‘herbal high’ are often misleading as many of these substances are not meant for human consumption and can kill.”
Geoff Ellis from DF Concerts said: “It’s going to be a really momentous festival weekend. We have an incredible line-up and we’ll be saying bye to Balado after 18 years, which means it’ll be a finale party to remember.
“However, we want to make sure that everyone comes prepared to enjoy the entire weekend so we recommend that they heed the tips from our partners before setting off.”